[gnome-shell] altTab: Restore correct visibility when cycling windows

[Florian Müllner <fmuellner src gnome org>]

commit d6a78d61d1b5fde8a5d657437287cfd473b7e546
Author: Florian Müllner <fmuellner gnome org>
Date:   Tue Sep 13 21:18:17 2016 +0200

    altTab: Restore correct visibility when cycling windows
    
    Commit 3171819c improved window cycling by using a dedicated to clone
    for highlighting rather than activating all cycled windows. Original
    window actors are hidden while its clone is showing, and shown again
    afterwards, however the latter is wrong for actors that are not supposed
    to be visible (for example where the window is minimized, or on a different
    workspace). Fix this by properly syncing the actor's visibility instead
    of showing it unconditionally.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=771536

 js/ui/altTab.js |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/js/ui/altTab.js b/js/ui/altTab.js
index e65d46b..c221707 100644
--- a/js/ui/altTab.js
+++ b/js/ui/altTab.js
@@ -386,7 +386,7 @@ const CyclerHighlight = new Lang.Class({
         this._window = w;
 
         if (this._clone.source)
-            this._clone.source.show();
+            this._clone.source.sync_visibility();
 
         let windowActor = this._window ? this._window.get_compositor_private()
                                        : null;