2a0c116757
When using the fade animation when transitioning to the overview instead of zoom, we fade out all window previews to fully transparent. But after commit 751189253a removed the old _updateWindowPositions() function, nothing resets the opacity again, so when switching from the app- to the window picker, all previews are hidden. Fix this by always resetting the window preview opacity after showing or hiding the overview. https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/2969