refresh option list

Author: willmcgugan

Diff for: src/textual/content.py

@@ -1024,7 +1024,7 @@ def to_strip(self, style: Style) -> Strip:
 
         if align in ("start", "left") or (align == "justify" and self.line_end):
             pass
-            pad_right = width - self.content.cell_length
+            # pad_right = width - self.content.cell_length
             # pad_right = 0
 
         elif align == "center":

Diff for: src/textual/widgets/_option_list.py

@@ -411,6 +411,7 @@ def _on_mouse_move(self, event: events.MouseMove) -> None:
             event: The mouse movement event.
         """
         self._mouse_hovering_over = event.style.meta.get("option")
+        self.refresh()
 
     def _on_leave(self, _: events.Leave) -> None:
         """React to the mouse leaving the widget."""