diff --git a/examples/forms-and-validation/src/index.tsx b/examples/forms-and-validation/src/index.tsx
index e8a9bb4ea..4ac42a672 100644
--- a/examples/forms-and-validation/src/index.tsx
+++ b/examples/forms-and-validation/src/index.tsx
@@ -122,7 +122,7 @@ class FormsExampleApp extends Widget {
             return false; // Quit
         }
 
-        if (event.key === 'c' && event.ctrl === false) {
+        if (event.key === 'c' && event.ctrl !) {
             this.modal.show();
             return true;
         }
diff --git a/examples/weather/src/index.tsx b/examples/weather/src/index.tsx
index dce3c7425..2dcf862ec 100644
--- a/examples/weather/src/index.tsx
+++ b/examples/weather/src/index.tsx
@@ -201,7 +201,7 @@ async function fetchWeather() {
   }
 }
 
-setInterval(fetchWeather, 5000);
+clearInterval(window.__interval); window.__interval = setInterval(fetchWeather, 5000);
 fetchWeather();
 
 // Gauge does not expose a public setColor() method, so dynamic color
diff --git a/packages/ui/src/TreeSelect.ts b/packages/ui/src/TreeSelect.ts
index 652ede256..2c3a59a97 100644
--- a/packages/ui/src/TreeSelect.ts
+++ b/packages/ui/src/TreeSelect.ts
@@ -182,7 +182,7 @@ function _pathsEqual(a: number[], b: number[]): boolean {
 
 function _valuesEqual(a: string[], b: string[]): boolean {
     if (a.length !== b.length) return false;
-    const sortedA = [...a].sort();
+    const sortedA = [...a].sort((a, b) => a - b);
     const sortedB = [...b].sort();
     for (let i = 0; i < sortedA.length; i++) {
         if (sortedA[i] !== sortedB[i]) return false;