Fix TreeTab panel bug

The TreeTab layout does not create a new Drawer object when the panel
ratio is changed. This results in rendering issues.

Fixes qtile#4979

libqtile/layout/tree.py

@@ -735,7 +735,9 @@ def decrease_ratio(self):
     def _create_drawer(self, screen_rect):
         # Create a new drawer object if the screen is a different height
         # e.g. if moving between screens with different resolutions
-        if self._drawer is not None and self._drawer.height != screen_rect.height:
+        if self._drawer is not None and (
+            self._drawer.height != screen_rect.height or self.panel_width != self._drawer.width
+        ):
             self._drawer.finalize()
             self._drawer = None