Dock covers the top panel during the login animation

Looks like a regression that started in GNOME 3.38.2 but I don't yet know which project.

29351b3a60938e6ef9b22323831b05be36438cd5 is the first bad commit
commit 29351b3a60938e6ef9b22323831b05be36438cd5
Author: Jonas Dreßler <email address hidden>
Date: Fri Oct 16 21:29:02 2020 +0000

    clutter/actor: Only allocate when actor is mapped, not only visible

It appears dash-to-dock is listening for 'workareas-changed' correctly. The problem is the first 'workareas-changed' happens before the panel exists, so it's the wrong work area. And then the second 'workareas-changed' happens around 900ms after the panel is allocated, which is also after the startup animation. So it seems the bug really is that 'workareas-changed' is not being emitted between the panel being allocated and the startup animation completing. This would affect a variety of extensions; not just docks but also desktop icons.

Fix proposed in https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1785

Fix also proposed in https://salsa.debian.org/gnome-team/gnome-shell/-/merge_requests/48

This bug was fixed in the package gnome-shell - 3.38.4-1ubuntu2

---------------
gnome-shell (3.38.4-1ubuntu2) hirsute; urgency=medium

  [ Daniel van Vugt ]
  * Add layout-Try-to-allocate-before-getting-size-of-tracke.patch.
    To fix LP: #1919979 and also to re-fix LP: #1917939
    (LP: #1919979, #1917939)
  * Drop layout-Allow-updating-struts-in-Overview.patch.
    Because it caused a regression and doesn't seem to have been necessary
    anyway. (LP: #1922772)

  [ Marco Trevisan (Treviño) ]
  * debian/patches: Fix suggestions box actor population in non-latin languages
    (LP: #1914230)
  * debian/patches: Enable to use Escape to cancel auth requests (with limits)
    (LP: #1921929)
  * debian/patches: Refresh

 -- Marco Trevisan (Treviño) <email address hidden> Thu, 15 Apr 2021 06:20:27 +0200