fix(text area): fix cursor display on wrapped line

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## Unreleased
+
+### Fixed
+
+- Fixed `TextArea` cursor display on wrapped lines https://github.com/Textualize/textual/pull/6196
+
 ## [6.5.0] - 2025-10-31
 
 ### Added

src/textual/widgets/_text_area.py

@@ -1229,6 +1229,7 @@ def render_line(self, y: int) -> Strip:
         scroll_x, scroll_y = self.scroll_offset
         absolute_y = scroll_y + y
         selection = self.selection
+        _, cursor_y = self._cursor_offset
         cache_key = (
             self.size,
             scroll_x,
@@ -1243,7 +1244,7 @@ def render_line(self, y: int) -> Strip:
                 if (
                     self._cursor_visible
                     and self.cursor_blink
-                    and absolute_y == selection.end[0]
+                    and absolute_y == cursor_y
                 )
                 else None
             ),