pause blink tweak

Author: willmcgugan

CHANGELOG.md

@@ -16,6 +16,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 - Widget.release_mouse will now only release the mouse, if it was captured by self https://github.com/Textualize/textual/pull/5900
 - Some optimizations to TextArea, which may be noticeable during scrolling (note: may break snapshots with a TextArea) https://github.com/Textualize/textual/pull/5925
+- Selecting in the TextArea now hides the cursor until you release the mouse https://github.com/Textualize/textual/pull/5925
 
 ## Added
 

src/textual/widgets/_text_area.py

@@ -1691,7 +1691,7 @@ async def _on_mouse_down(self, event: events.MouseDown) -> None:
         # Capture the mouse so that if the cursor moves outside the
         # TextArea widget while selecting, the widget still scrolls.
         self.capture_mouse()
-        self._pause_blink(visible=True)
+        self._pause_blink(visible=False)
         self.history.checkpoint()
 
     async def _on_mouse_move(self, event: events.MouseMove) -> None: