Always dispatch a RedrawRequested event after creating a new window (#1175)

CHANGELOG.md

@@ -20,6 +20,7 @@
 - On macOS, fix events not being emitted during modal loops, such as when windows are being resized
   by the user.
 - On Windows, fix hovering the mouse over the active window creating an endless stream of CursorMoved events.
+- Always dispatch a `RedrawRequested` event after creating a new window.
 - On X11, return dummy monitor data to avoid panicking when no monitors exist.
 - On X11, prevent stealing input focus when creating a new window.
   Only steal input focus when entering fullscreen mode.

src/window.rs

@@ -331,8 +331,12 @@ impl WindowBuilder {
         self,
         window_target: &EventLoopWindowTarget<T>,
     ) -> Result<Window, OsError> {
-        platform_impl::Window::new(&window_target.p, self.window, self.platform_specific)
+        platform_impl::Window::new(&window_target.p, self.window, self.platform_specific).map(
-            .map(|window| Window { window })
+            |window| {
+                window.request_redraw();
+                Window { window }
+            },
+        )
     }
 }