Windows: Increase border size in undecorated shadow mode for better grip

src/changelog/unreleased.md

@@ -194,6 +194,7 @@ changelog entry.
 - Removed `KeyEventExtModifierSupplement`, and made the fields `text_with_all_modifiers` and
   `key_without_modifiers` public on `KeyEvent` instead.
 - Move `window::Fullscreen` to `monitor::Fullscreen`.
+- On Windows, adjusted the border size in undecorated shadow mode to improve gripability.
 
 ### Removed
 

src/platform_impl/windows/event_loop.rs

@@ -1108,8 +1108,10 @@ unsafe fn public_window_callback_inner(
                 // Unfortunately this results in janky resize behavior, where the compositor is
                 // ahead of the window surface. Currently, there seems no option to achieve this
                 // with the Windows API.
-                params.rgrc[0].top += 1;
-                params.rgrc[0].bottom += 1;
+
+                params.rgrc[0].bottom -= 2;
+                params.rgrc[0].left += 2;
+                params.rgrc[0].right -= 2;
             }
 
             result = ProcResult::Value(0);