Public bug reported:
Upgraded to 18.04.2 LTS (GNOME Shell 3.28.4/X11) from 16.04 LTS (Unity)
and noticed that Alt-Tab task switcher doesn't update immediately with
LibreOffice documents.
Case in point:
I've got LibreOffice, Firefox and a Nautilus window with a directory of
LibreOffice spreadsheets open. When I Alt-Tab through this I see a generic
LibreOffice icon, a Firefox icon (and its open windows) and a Nautilus icon.
I'll then switch to the Nautilus window and open spreadsheet(s) and I see that
LibreOffice has loaded them in the background behind the Nautilus window. Now
when I Alt-Tab to switch to LibreOffice, there is not even a generic
LibreOffice icon anymore. If I wait a few seconds and Alt-Tab again, I then see
a LibreOffice Calc icon (and the open file windows).
Update: I restarted using Wayland instead of X11 and the problem seems
resolved, although LibreOffice defaults to a generic LO icon instead of
a specific Writer/Calc/Draw/etc. icon in the switcher. But Wayland is
not yet an option for me at present. Nevertheless it exists in GNOME
Shell using X11.
I haven't noticed similar behaviour with other programs with similar
lags in the task switcher. This delay wasn't present (for me) before the
upgrade/switch to GNOME Shell, so I'm assuming it's a Ubuntu/GNOME
problem. I've also seen that similar problems have been reported in the
past but for the most part they are quite old and I did not find this
reported with the latest GNOME/Ubuntu 18.04LTS hence my new bug report.
Thank you.
** Affects: gnome-shell (Ubuntu)
Importance: Undecided
Status: New
** Tags: 18.04lts gnome-shell libreoffice
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https://bugs.launchpad.net/bugs/1837968
Title:
GNOME Shell (X11) task switcher and LibreOffice
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