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Description of problem:
I see lot of following JS errors:

JS ERROR: Error: Expected an object of type ClutterActor for argument 'sibling' but got type undefined
                                         _syncStacking@resource:///org/gnome/shell/ui/workspaceAnimation.js:80:18



Version-Release number of selected component (if applicable):
gnome-shell-40.8-2.el9.x86_64
gjs-1.68.4-1.el9.x86_64

How reproducible:
100%

Steps to Reproduce:
1. just login to GDM
2.
3.

Actual results:


Expected results:


Additional info:
Not sure why this is happening, seem harmless though.

Do you happen to use more than one monitor?

Yes but one of them is switched off.

Yeah, the code path in question is also used for sticky (that is, visible on all workspaces) windows, so it doesn't depend on the monitor.

I filed a fix upstream at https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2209, but you are right that it is harmless.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (gnome-shell bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2022:7982