ba23279f1f
On some touchpads/laptops, the swipe gesture to open the overview can be performed so fast, that it starts and ends in between two frames. Now when this happens, and the gesture ended with too little movement to confidently say the user intended to open the overview, we'll close the overview again. While closing the overview, we freeze the layout of the Workspace in order to avoid changes to windows messing with the animation. This means that in the case described above, we freeze the layout even before the first frame of the opening animation happens. No frames being drawn also means no allocations happening, and since we create this._layout in vfunc_allocate(), this means that on the first allocation cycle of the overview we'll see this._layoutFrozen = true, but will also not have a this._layout nor this._windowSlots. This creates an annoying visual glitch where for a split second all the windows disappear (overview is visible but no WindowPreviews get allocated). To fix this, force creating a layout on the first allocation cycle, even if the layout is currently frozen. Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2203>
GNOME Shell
GNOME Shell provides core user interface functions for the GNOME desktop, like switching to windows and launching applications. GNOME Shell takes advantage of the capabilities of modern graphics hardware and introduces innovative user interface concepts to provide a visually attractive and easy to use experience.
For more information about GNOME Shell, including instructions on how to build GNOME Shell from source and how to get involved with the project, see the project wiki.
Bugs should be reported to the GNOME bug tracking system. Please refer to the Schedule wiki page to see the supported versions.
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License
GNOME Shell is distributed under the terms of the GNU General Public License, version 2 or later. See the COPYING file for details.