simplify

src/textual/_styles_cache.py

@@ -104,7 +104,6 @@ class StylesCache:
         Returns:
             Rendered lines.
         """
-
         border_title = widget._border_title
         border_subtitle = widget._border_subtitle
 

src/textual/widget.py

@@ -3627,7 +3627,7 @@ class Widget(DOMNode):
         """
         parent = self.parent
         if isinstance(parent, Widget):
-            if self.region:
+            if self._size:
                 self.screen.scroll_to_widget(
                     self,
                     animate=animate,