File no-overlay-scrolling.patch of Package gtk3

--- gtk/gtkscrolledwindow.c
+++ gtk/gtkscrolledwindow.c
@@ -4218,7 +4218,7 @@
 
   use_indicators = priv->overlay_scrolling;
 
-  if (g_strcmp0 (g_getenv ("GTK_OVERLAY_SCROLLING"), "0") == 0)
+  if (g_strcmp0 (g_getenv ("GTK_OVERLAY_SCROLLING"), "1") != 0)
     use_indicators = FALSE;
 
   if (priv->use_indicators != use_indicators)