Commit
c8726ef04b94ad8e66e1191a06ff793b908d130c
by Sven GothelBug 924: Fix X11 Fullscreen ALT-TAB Regression ; Make ALWAYS_ON_TOP Persistent when Reparenting (child -> top)
- X11 Fullscreen ALT-TAB regression (no task-switcher visible)
We still need the fast reconfigure path for ALWAYSONTOP only toggle.
It was removed w/ commit c9fcc8cd510abc0cbebb872dc3e457327655e778,
which disabled toggling FULLSCREEN and ALWAYSONTOP.
Note: Another bug in Unity WM's Compiz:
'Unredirect Fullscreen Windows := True' disables
the ALT-TAB taskbar/launcher HUD rendering and subsequent task-switch.
Hence it shall be disabled .. nothing we can do here.
- ALWAYS_ON_TOP not persistent when child -> top
WM removes ALWAYS_ON_TOP state when reparenting,
hence reinforce it when Child -> Top.