Fix scrollbar not updating with CSS

src/textual/_compositor.py

@@ -214,7 +214,6 @@ class Compositor:
         Returns:
             ReflowResult: Hidden shown and resized widgets
         """
-        print("REFLOW")
         self._cuts = None
         self.root = parent
         self.size = size

src/textual/css/stylesheet.py

@@ -380,6 +380,11 @@ class Stylesheet:
         apply = self.apply
         for node in root.walk_children():
             apply(node, animate=animate)
+            if isinstance(node, Widget):
+                if node.show_vertical_scrollbar:
+                    apply(node.vertical_scrollbar)
+                if node.show_horizontal_scrollbar:
+                    apply(node.horizontal_scrollbar)
 
 
 if __name__ == "__main__":

src/textual/screen.py

@@ -181,7 +181,6 @@ class Screen(Widget):
         self.check_idle()
 
     async def handle_layout(self, message: messages.Layout) -> None:
-        print("LAYOUT")
         message.stop()
         message.prevent_default()
         self._layout_required = True