diff --git a/core/src/input.rs b/core/src/input.rs
index 921c5687e76c..fc7e0c449d16 100644
--- a/core/src/input.rs
+++ b/core/src/input.rs
@@ -72,7 +72,10 @@ impl ClickEventData {
 }
 
 pub struct InputManager {
-    key_descriptors_down: HashSet<KeyDescriptor>,
+    /// Tracks which physical keys (identified by physical key + location) are currently pressed.
+    /// This allows us to match key-up events even when the logical key changes
+    /// due to modifier state changes (e.g., shift pressed/released).
+    keys_down_phys_loc: HashSet<(PhysicalKey, KeyLocation)>,
 
     keys_down: HashSet<KeyCode>,
     keys_toggled: HashSet<KeyCode>,
@@ -89,7 +92,7 @@ pub struct InputManager {
 impl InputManager {
     pub fn new(gamepad_button_mapping: HashMap<GamepadButton, KeyCode>) -> Self {
         Self {
-            key_descriptors_down: HashSet::new(),
+            keys_down_phys_loc: HashSet::new(),
             keys_down: HashSet::new(),
             keys_toggled: HashSet::new(),
             last_key: KeyCode::UNKNOWN,
@@ -156,11 +159,16 @@ impl InputManager {
             }
 
             PlayerEvent::KeyDown { key } => {
-                self.key_descriptors_down.insert(key);
+                // Track the physical key + location, so we can match key-up events
+                // even when the logical key changes due to modifier state changes
+                // (e.g., shift pressed/released).
+                self.keys_down_phys_loc
+                    .insert((key.physical_key, key.key_location));
 
                 let key_code = self.map_to_key_code(key)?;
                 let key_char = self.map_to_key_char(key);
                 let key_location = self.map_to_key_location(key);
+
                 InputEvent::KeyDown {
                     key_code,
                     key_char,
@@ -168,10 +176,17 @@ impl InputManager {
                 }
             }
             PlayerEvent::KeyUp { key } => {
-                if !self.key_descriptors_down.remove(&key) {
+                // Match key-up events by physical key and location, not the exact
+                // KeyDescriptor. This handles cases where modifier state changes
+                // between key-down and key-up (e.g., shift pressed/released),
+                // which would change the logical key (e.g., 'w' -> 'W').
+                if !self
+                    .keys_down_phys_loc
+                    .remove(&(key.physical_key, key.key_location))
+                {
                     // Ignore spurious KeyUp events that may happen e.g. during IME.
                     // We assume that in order for a key to generate KeyUp, it had to
-                    // generate KeyDown for the same exact KeyDescriptor.
+                    // generate KeyDown for the same physical key and location.
 
                     // TODO Apparently this behavior is platform-dependent and
                     //   doesn't happen on Windows. We cannot remove it fully
@@ -183,6 +198,7 @@ impl InputManager {
                 let key_code = self.map_to_key_code(key)?;
                 let key_char = self.map_to_key_char(key);
                 let key_location = self.map_to_key_location(key);
+
                 InputEvent::KeyUp {
                     key_code,
                     key_char,
diff --git a/tests/framework/src/runner/automation.rs b/tests/framework/src/runner/automation.rs
index c8b55400b0d8..8b149f51eb87 100644
--- a/tests/framework/src/runner/automation.rs
+++ b/tests/framework/src/runner/automation.rs
@@ -117,53 +117,149 @@ pub fn perform_automated_event(evt: &AutomatedEvent, player: &mut Player) {
 }
 
 pub fn automated_key_to_descriptor(automated_key: AutomatedKey) -> KeyDescriptor {
-    let logical_key = match automated_key {
-        AutomatedKey::Char(ch) | AutomatedKey::Numpad(ch) => LogicalKey::Character(ch),
-        AutomatedKey::ArrowDown => LogicalKey::Named(NamedKey::ArrowDown),
-        AutomatedKey::ArrowLeft => LogicalKey::Named(NamedKey::ArrowLeft),
-        AutomatedKey::ArrowRight => LogicalKey::Named(NamedKey::ArrowRight),
-        AutomatedKey::ArrowUp => LogicalKey::Named(NamedKey::ArrowUp),
-        AutomatedKey::Backspace => LogicalKey::Named(NamedKey::Backspace),
-        AutomatedKey::CapsLock => LogicalKey::Named(NamedKey::CapsLock),
-        AutomatedKey::Delete => LogicalKey::Named(NamedKey::Delete),
-        AutomatedKey::End => LogicalKey::Named(NamedKey::End),
-        AutomatedKey::Enter => LogicalKey::Named(NamedKey::Enter),
-        AutomatedKey::Escape => LogicalKey::Named(NamedKey::Escape),
-        AutomatedKey::F1 => LogicalKey::Named(NamedKey::F1),
-        AutomatedKey::F2 => LogicalKey::Named(NamedKey::F2),
-        AutomatedKey::F3 => LogicalKey::Named(NamedKey::F3),
-        AutomatedKey::F4 => LogicalKey::Named(NamedKey::F4),
-        AutomatedKey::F5 => LogicalKey::Named(NamedKey::F5),
-        AutomatedKey::F6 => LogicalKey::Named(NamedKey::F6),
-        AutomatedKey::F7 => LogicalKey::Named(NamedKey::F7),
-        AutomatedKey::F8 => LogicalKey::Named(NamedKey::F8),
-        AutomatedKey::F9 => LogicalKey::Named(NamedKey::F9),
-        AutomatedKey::Home => LogicalKey::Named(NamedKey::Home),
-        AutomatedKey::Insert => LogicalKey::Named(NamedKey::Insert),
-        AutomatedKey::LeftAlt => LogicalKey::Named(NamedKey::Alt),
-        AutomatedKey::LeftControl => LogicalKey::Named(NamedKey::Control),
-        AutomatedKey::LeftShift => LogicalKey::Named(NamedKey::Shift),
-        AutomatedKey::NumLock => LogicalKey::Named(NamedKey::NumLock),
-        AutomatedKey::NumpadDelete => LogicalKey::Named(NamedKey::Delete),
-        AutomatedKey::NumpadDown => LogicalKey::Named(NamedKey::ArrowDown),
-        AutomatedKey::NumpadEnd => LogicalKey::Named(NamedKey::End),
-        AutomatedKey::NumpadHome => LogicalKey::Named(NamedKey::Home),
-        AutomatedKey::NumpadInsert => LogicalKey::Named(NamedKey::Insert),
-        AutomatedKey::NumpadLeft => LogicalKey::Named(NamedKey::ArrowLeft),
-        AutomatedKey::NumpadPageDown => LogicalKey::Named(NamedKey::PageDown),
-        AutomatedKey::NumpadPageUp => LogicalKey::Named(NamedKey::PageUp),
-        AutomatedKey::NumpadRight => LogicalKey::Named(NamedKey::ArrowRight),
-        AutomatedKey::NumpadUp => LogicalKey::Named(NamedKey::ArrowUp),
-        AutomatedKey::PageDown => LogicalKey::Named(NamedKey::PageDown),
-        AutomatedKey::PageUp => LogicalKey::Named(NamedKey::PageUp),
-        AutomatedKey::Pause => LogicalKey::Named(NamedKey::Pause),
-        AutomatedKey::RightControl => LogicalKey::Named(NamedKey::Control),
-        AutomatedKey::RightShift => LogicalKey::Named(NamedKey::Shift),
-        AutomatedKey::ScrollLock => LogicalKey::Named(NamedKey::ScrollLock),
-        AutomatedKey::Space => LogicalKey::Character(' '),
-        AutomatedKey::Tab => LogicalKey::Named(NamedKey::Tab),
-        AutomatedKey::Unknown => LogicalKey::Unknown,
+    let (logical_key, physical_key) = match automated_key {
+        AutomatedKey::Char(ch) | AutomatedKey::Numpad(ch) => (
+            LogicalKey::Character(ch),
+            match ch {
+                'a' | 'A' => PhysicalKey::KeyA,
+                'b' | 'B' => PhysicalKey::KeyB,
+                'c' | 'C' => PhysicalKey::KeyC,
+                'd' | 'D' => PhysicalKey::KeyD,
+                'e' | 'E' => PhysicalKey::KeyE,
+                'f' | 'F' => PhysicalKey::KeyF,
+                'g' | 'G' => PhysicalKey::KeyG,
+                'h' | 'H' => PhysicalKey::KeyH,
+                'i' | 'I' => PhysicalKey::KeyI,
+                'j' | 'J' => PhysicalKey::KeyJ,
+                'k' | 'K' => PhysicalKey::KeyK,
+                'l' | 'L' => PhysicalKey::KeyL,
+                'm' | 'M' => PhysicalKey::KeyM,
+                'n' | 'N' => PhysicalKey::KeyN,
+                'o' | 'O' => PhysicalKey::KeyO,
+                'p' | 'P' => PhysicalKey::KeyP,
+                'q' | 'Q' => PhysicalKey::KeyQ,
+                'r' | 'R' => PhysicalKey::KeyR,
+                's' | 'S' => PhysicalKey::KeyS,
+                't' | 'T' => PhysicalKey::KeyT,
+                'u' | 'U' => PhysicalKey::KeyU,
+                'v' | 'V' => PhysicalKey::KeyV,
+                'w' | 'W' => PhysicalKey::KeyW,
+                'x' | 'X' => PhysicalKey::KeyX,
+                'y' | 'Y' => PhysicalKey::KeyY,
+                'z' | 'Z' => PhysicalKey::KeyZ,
+                '0' => PhysicalKey::Digit0,
+                '1' => PhysicalKey::Digit1,
+                '2' => PhysicalKey::Digit2,
+                '3' => PhysicalKey::Digit3,
+                '4' => PhysicalKey::Digit4,
+                '5' => PhysicalKey::Digit5,
+                '6' => PhysicalKey::Digit6,
+                '7' => PhysicalKey::Digit7,
+                '8' => PhysicalKey::Digit8,
+                '9' => PhysicalKey::Digit9,
+                '!' => PhysicalKey::Digit1,
+                '@' => PhysicalKey::Digit2,
+                '#' => PhysicalKey::Digit3,
+                '$' => PhysicalKey::Digit4,
+                '%' => PhysicalKey::Digit5,
+                '^' => PhysicalKey::Digit6,
+                '&' => PhysicalKey::Digit7,
+                '*' => PhysicalKey::Digit8,
+                '(' => PhysicalKey::Digit9,
+                ')' => PhysicalKey::Digit0,
+                '-' | '_' => PhysicalKey::Minus,
+                '=' | '+' => PhysicalKey::Equal,
+                '[' | '{' => PhysicalKey::BracketLeft,
+                ']' | '}' => PhysicalKey::BracketRight,
+                '\\' | '|' => PhysicalKey::Backslash,
+                ';' | ':' => PhysicalKey::Semicolon,
+                '\'' | '"' => PhysicalKey::Quote,
+                ',' | '<' => PhysicalKey::Comma,
+                '.' | '>' => PhysicalKey::Period,
+                '/' | '?' => PhysicalKey::Slash,
+                '`' | '~' => PhysicalKey::Backquote,
+                ' ' => PhysicalKey::Space,
+                _ => todo!("Key {ch} is unmapped"),
+            },
+        ),
+        AutomatedKey::ArrowDown => (
+            LogicalKey::Named(NamedKey::ArrowDown),
+            PhysicalKey::ArrowDown,
+        ),
+        AutomatedKey::ArrowLeft => (
+            LogicalKey::Named(NamedKey::ArrowLeft),
+            PhysicalKey::ArrowLeft,
+        ),
+        AutomatedKey::ArrowRight => (
+            LogicalKey::Named(NamedKey::ArrowRight),
+            PhysicalKey::ArrowRight,
+        ),
+        AutomatedKey::ArrowUp => (LogicalKey::Named(NamedKey::ArrowUp), PhysicalKey::ArrowUp),
+        AutomatedKey::Backspace => (
+            LogicalKey::Named(NamedKey::Backspace),
+            PhysicalKey::Backspace,
+        ),
+        AutomatedKey::CapsLock => (LogicalKey::Named(NamedKey::CapsLock), PhysicalKey::CapsLock),
+        AutomatedKey::Delete => (LogicalKey::Named(NamedKey::Delete), PhysicalKey::Delete),
+        AutomatedKey::End => (LogicalKey::Named(NamedKey::End), PhysicalKey::End),
+        AutomatedKey::Enter => (LogicalKey::Named(NamedKey::Enter), PhysicalKey::Enter),
+        AutomatedKey::Escape => (LogicalKey::Named(NamedKey::Escape), PhysicalKey::Escape),
+        AutomatedKey::F1 => (LogicalKey::Named(NamedKey::F1), PhysicalKey::F1),
+        AutomatedKey::F2 => (LogicalKey::Named(NamedKey::F2), PhysicalKey::F2),
+        AutomatedKey::F3 => (LogicalKey::Named(NamedKey::F3), PhysicalKey::F3),
+        AutomatedKey::F4 => (LogicalKey::Named(NamedKey::F4), PhysicalKey::F4),
+        AutomatedKey::F5 => (LogicalKey::Named(NamedKey::F5), PhysicalKey::F5),
+        AutomatedKey::F6 => (LogicalKey::Named(NamedKey::F6), PhysicalKey::F6),
+        AutomatedKey::F7 => (LogicalKey::Named(NamedKey::F7), PhysicalKey::F7),
+        AutomatedKey::F8 => (LogicalKey::Named(NamedKey::F8), PhysicalKey::F8),
+        AutomatedKey::F9 => (LogicalKey::Named(NamedKey::F9), PhysicalKey::F9),
+        AutomatedKey::Home => (LogicalKey::Named(NamedKey::Home), PhysicalKey::Home),
+        AutomatedKey::Insert => (LogicalKey::Named(NamedKey::Insert), PhysicalKey::Insert),
+        AutomatedKey::LeftAlt => (LogicalKey::Named(NamedKey::Alt), PhysicalKey::AltLeft),
+        AutomatedKey::LeftControl => (
+            LogicalKey::Named(NamedKey::Control),
+            PhysicalKey::ControlLeft,
+        ),
+        AutomatedKey::LeftShift => (LogicalKey::Named(NamedKey::Shift), PhysicalKey::ShiftLeft),
+        AutomatedKey::NumLock => (LogicalKey::Named(NamedKey::NumLock), PhysicalKey::NumLock),
+        AutomatedKey::NumpadDelete => (LogicalKey::Named(NamedKey::Delete), PhysicalKey::Delete),
+        AutomatedKey::NumpadDown => (
+            LogicalKey::Named(NamedKey::ArrowDown),
+            PhysicalKey::ArrowDown,
+        ),
+        AutomatedKey::NumpadEnd => (LogicalKey::Named(NamedKey::End), PhysicalKey::End),
+        AutomatedKey::NumpadHome => (LogicalKey::Named(NamedKey::Home), PhysicalKey::Home),
+        AutomatedKey::NumpadInsert => (LogicalKey::Named(NamedKey::Insert), PhysicalKey::Insert),
+        AutomatedKey::NumpadLeft => (
+            LogicalKey::Named(NamedKey::ArrowLeft),
+            PhysicalKey::ArrowLeft,
+        ),
+        AutomatedKey::NumpadPageDown => {
+            (LogicalKey::Named(NamedKey::PageDown), PhysicalKey::PageDown)
+        }
+        AutomatedKey::NumpadPageUp => (LogicalKey::Named(NamedKey::PageUp), PhysicalKey::PageUp),
+        AutomatedKey::NumpadRight => (
+            LogicalKey::Named(NamedKey::ArrowRight),
+            PhysicalKey::ArrowRight,
+        ),
+        AutomatedKey::NumpadUp => (LogicalKey::Named(NamedKey::ArrowUp), PhysicalKey::ArrowUp),
+        AutomatedKey::PageDown => (LogicalKey::Named(NamedKey::PageDown), PhysicalKey::PageDown),
+        AutomatedKey::PageUp => (LogicalKey::Named(NamedKey::PageUp), PhysicalKey::PageUp),
+        AutomatedKey::Pause => (LogicalKey::Named(NamedKey::Pause), PhysicalKey::Pause),
+        AutomatedKey::RightControl => (
+            LogicalKey::Named(NamedKey::Control),
+            PhysicalKey::ControlRight,
+        ),
+        AutomatedKey::RightShift => (LogicalKey::Named(NamedKey::Shift), PhysicalKey::ShiftRight),
+        AutomatedKey::ScrollLock => (
+            LogicalKey::Named(NamedKey::ScrollLock),
+            PhysicalKey::ScrollLock,
+        ),
+        AutomatedKey::Space => (LogicalKey::Character(' '), PhysicalKey::Space),
+        AutomatedKey::Tab => (LogicalKey::Named(NamedKey::Tab), PhysicalKey::Tab),
+        AutomatedKey::Unknown => (LogicalKey::Unknown, PhysicalKey::Unknown),
     };
+
     let key_location = match automated_key {
         AutomatedKey::Numpad(_) => KeyLocation::Numpad,
         AutomatedKey::LeftAlt => KeyLocation::Left,
@@ -184,9 +280,9 @@ pub fn automated_key_to_descriptor(automated_key: AutomatedKey) -> KeyDescriptor
         AutomatedKey::RightShift => KeyLocation::Right,
         _ => KeyLocation::Standard,
     };
+
     KeyDescriptor {
-        // We don't use physical keys in tests
-        physical_key: PhysicalKey::Unknown,
+        physical_key,
         logical_key,
         key_location,
     }
diff --git a/tests/tests/swfs/avm2/spurious_key_events/Test.as b/tests/tests/swfs/avm2/spurious_key_events/Test.as
new file mode 100644
index 000000000000..93c2e729ed95
--- /dev/null
+++ b/tests/tests/swfs/avm2/spurious_key_events/Test.as
@@ -0,0 +1,25 @@
+package {
+import flash.display.*;
+import flash.text.*;
+import flash.events.*;
+
+public class Test extends MovieClip {
+    public function Test() {
+        var tf = new TextField();
+        tf.type = "input";
+        addChild(tf);
+
+        tf.addEventListener(TextEvent.TEXT_INPUT, function(evt:TextEvent):void{
+            trace("textInput " + evt.text);
+        });
+        tf.addEventListener(KeyboardEvent.KEY_DOWN, function(evt:KeyboardEvent):void{
+            trace("keyDown " + evt.keyCode + " " + evt.charCode);
+        });
+        tf.addEventListener(KeyboardEvent.KEY_UP, function(evt:KeyboardEvent):void{
+            trace("keyUp " + evt.keyCode + " " + evt.charCode);
+        });
+
+        stage.focus = tf;
+    }
+}
+}
diff --git a/tests/tests/swfs/avm2/spurious_key_events/input.json b/tests/tests/swfs/avm2/spurious_key_events/input.json
new file mode 100644
index 000000000000..37dd98f730e7
--- /dev/null
+++ b/tests/tests/swfs/avm2/spurious_key_events/input.json
@@ -0,0 +1,21 @@
+[
+  { "type": "FocusGained" },
+  { "type": "Wait" },
+
+  { "type": "KeyDown", "key": { "Char": "w" } },
+  { "type": "KeyUp", "key": { "Char": "w" } },
+
+  { "type": "KeyUp", "key": { "Char": "a" } },
+
+  { "type": "KeyDown", "key": { "Char": "w" } },
+  { "type": "KeyDown", "key": "LeftShift" },
+  { "type": "KeyUp", "key": { "Char": "W" } },
+  { "type": "KeyUp", "key": "LeftShift" },
+
+  { "type": "KeyUp", "key": { "Char": "x" } },
+
+  { "type": "KeyDown", "key": { "Char": "b" } },
+  { "type": "KeyUp", "key": { "Char": "b" } },
+
+  { "type": "FocusLost" }
+]
diff --git a/tests/tests/swfs/avm2/spurious_key_events/output.txt b/tests/tests/swfs/avm2/spurious_key_events/output.txt
new file mode 100644
index 000000000000..0d47aced48f7
--- /dev/null
+++ b/tests/tests/swfs/avm2/spurious_key_events/output.txt
@@ -0,0 +1,8 @@
+keyDown 87 119
+keyUp 87 119
+keyDown 87 119
+keyDown 16 0
+keyUp 87 87
+keyUp 16 0
+keyDown 66 98
+keyUp 66 98
diff --git a/tests/tests/swfs/avm2/spurious_key_events/test.swf b/tests/tests/swfs/avm2/spurious_key_events/test.swf
new file mode 100644
index 000000000000..24518c99cda6
Binary files /dev/null and b/tests/tests/swfs/avm2/spurious_key_events/test.swf differ
diff --git a/tests/tests/swfs/avm2/spurious_key_events/test.toml b/tests/tests/swfs/avm2/spurious_key_events/test.toml
new file mode 100644
index 000000000000..568cadba535f
--- /dev/null
+++ b/tests/tests/swfs/avm2/spurious_key_events/test.toml
@@ -0,0 +1 @@
+num_ticks = 2