appDisplay: Fix app folder "modal-ness"

Commit 5d00c1a5ee moved app folder popups to GrabHelper - for some
reason, the line that ensures the current behavior of only considering
events inside the app picker to dismiss popups got lost ...

diff --git a/js/ui/appDisplay.js b/js/ui/appDisplay.js
index 854acd1b4af508c47fdf6133e3dcabb3d552fa85..2f2ad026802379d4dfc9fddb4ccb1076a6cfc1f9 100644 (file)
--- a/js/ui/appDisplay.js
+++ b/js/ui/appDisplay.js
@@ -1251,6 +1251,7 @@ const AppFolderPopup = new Lang.Class({
                 this.actor.destroy();
             }));
         this._grabHelper = new GrabHelper.GrabHelper(this.actor);
+        this._grabHelper.addActor(Main.layoutManager.overviewGroup);
     },
 
     toggle: function() {