Do not judge whether the window is decorated or not

zhuyaliang · raveit65 · commit efac7b71a26a · 2019-03-06T15:14:04.000+01:00
diff --git a/src/core/constraints.c b/src/core/constraints.c
@@ -1481,7 +1481,6 @@ constrain_titlebar_visible (MetaWindow         *window,
       window->type == META_WINDOW_DOCK    ||
       window->fullscreen                  ||
       !window->require_titlebar_visible   ||
-      !window->decorated                  ||
       unconstrained_user_action)
     return TRUE;
 
