better jank fix

src/textual/widgets/_footer.py

@@ -331,9 +331,8 @@ class Footer(ScrollableContainer, can_focus=False, can_focus_children=False):
         self._bindings_ready = True
         if not screen.app.app_focus:
             return
-        self.app.delay_update()
         if self.is_attached and screen is self.screen:
-            await self.recompose()
+            self.call_after_refresh(self.recompose)
 
     def _on_mouse_scroll_down(self, event: events.MouseScrollDown) -> None:
         if self.allow_horizontal_scroll:

src/textual/widgets/_help_panel.py

@@ -79,7 +79,10 @@ class HelpPanel(Widget):
     DEFAULT_CLASSES = "-textual-system"
 
     def on_mount(self):
-        self.watch(self.screen, "focused", self.update_help)
+        def update_help(focused_widget: Widget | None):
+            self.update_help(focused_widget)
+
+        self.watch(self.screen, "focused", update_help)
 
     def update_help(self, focused_widget: Widget | None) -> None:
         """Update the help for the focused widget.

src/textual/widgets/_key_panel.py

@@ -1,7 +1,6 @@
 from __future__ import annotations
 
 from collections import defaultdict
-from functools import partial
 from itertools import groupby
 from operator import itemgetter
 from typing import TYPE_CHECKING
@@ -164,16 +163,17 @@ class KeyPanel(VerticalScroll, can_focus=False):
         yield BindingsTable(shrink=True, expand=False)
 
     async def on_mount(self) -> None:
+        mount_screen = self.screen
+
         async def bindings_changed(screen: Screen) -> None:
             """Update bindings."""
             if not screen.app.app_focus:
                 return
-            if self.is_attached and screen is self.screen:
-                self.refresh(recompose=True)
+            if self.is_attached and screen is mount_screen:
+                await self.recompose()
 
         def _bindings_changed(screen: Screen) -> None:
-            """Update bindings after a short delay."""
-            screen.set_timer(1 / 20, partial(bindings_changed, screen))
+            self.call_after_refresh(bindings_changed, screen)
 
         self.set_class(self.app.ansi_color, "-ansi-scrollbar")
         self.screen.bindings_updated_signal.subscribe(self, _bindings_changed)