Merge pull request #1181 from davep/bug/1175/missing-borders

Don't take transparent to imply not visible

CHANGELOG.md

@@ -34,6 +34,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 - Fixed DataTable row not updating after add https://github.com/Textualize/textual/issues/1026
 - Fixed issues with animation. Now objects of different types may be animated.
+- Fixed containers with transparent background not showing borders https://github.com/Textualize/textual/issues/1175
 
 ## [0.4.0] - 2022-11-08
 

src/textual/_compositor.py

@@ -633,11 +633,7 @@ class Compositor:
         def is_visible(widget: Widget) -> bool:
             """Return True if the widget is (literally) visible by examining various
             properties which affect whether it can be seen or not."""
-            return (
-                widget.visible
-                and not widget.is_transparent
-                and widget.styles.opacity > 0
-            )
+            return widget.visible and widget.styles.opacity > 0
 
         _Region = Region