diff --git a/src/app.rs b/src/app.rs
index 06da615..92919e2 100644
--- a/src/app.rs
+++ b/src/app.rs
@@ -288,6 +288,7 @@ impl Application {
                 }
             }
             let clipped_primitives = self.ctx.tessellate(output.shapes, output.pixels_per_point);
+            viewport.window.pre_present_notify();
             self.shared.painter.paint_and_update_textures(
                 viewport.id,
                 output.pixels_per_point,
@@ -296,7 +297,6 @@ impl Application {
                 &output.textures_delta,
                 vec![],
             );
-            viewport.window.pre_present_notify();
         }
         let mut active_viewports = ViewportIdSet::default();
         for (id, update) in updates {
@@ -398,6 +398,9 @@ impl ApplicationHandler<UserEvent> for Application {
         if close_requested && viewport_id == ViewportId::ROOT {
             event_loop.exit();
         }
+        if response.repaint {
+            viewport.window.request_redraw();
+        }
         if !response.consumed {
             match event {
                 WindowEvent::KeyboardInput { event, .. }