--- a/widget/gtk/nsWindow.cpp
+++ b/widget/gtk/nsWindow.cpp
@@ -4200,16 +4200,18 @@ nsWindow::NativeMoveResize()
         // hides the window or shows it.  It also prevents us from
         // calling NativeShow(false) excessively on the window which
         // causes unneeded X traffic.
         if (!mNeedsShow && mIsShown) {
             mNeedsShow = true;
             NativeShow(false);
         }
         NativeMove();
+
+        return;
     }
 
     GdkRectangle size = DevicePixelsToGdkSizeRoundUp(mBounds.Size());
     GdkPoint topLeft = DevicePixelsToGdkPointRoundDown(mBounds.TopLeft());
 
     LOG(("nsWindow::NativeMoveResize [%p] %d %d %d %d\n", (void *)this,
          topLeft.x, topLeft.y, size.width, size.height));