macos: fix unmaximize opacity around edges of window

diff --git a/gdk/macos/GdkMacosWindow.c b/gdk/macos/GdkMacosWindow.c
index 750c21d966886308ef30395320477e7145bd6e7d..8dda79ab4d6495715d11c897580de113c3090431 100644 (file)
--- a/gdk/macos/GdkMacosWindow.c
+++ b/gdk/macos/GdkMacosWindow.c
@@ -214,7 +214,14 @@ typedef NSString *CALayerContentsGravity;
    * as we are leaving maximized state.
    */
   if ((style_mask & NSWindowStyleMaskTitled) == 0 && [self isOpaque])
-    [self setOpaque:NO];
+    {
+      GdkSurface *surface = GDK_SURFACE ([self gdkSurface]);
+
+      [self setOpaque:NO];
+
+      /* Force updating of various styling, regions, etc */
+      _gdk_surface_update_size (surface);
+    }
 }
 
 -(void)windowDidMove:(NSNotification *)aNotification