The metadata.json for this extension doesn't declare compatibility with
GNOME 41. I don't know whether the actual code will need changes or not:
the conservative assumption is that it probably will (so please test).
gnome-shell 41 should be available in experimental soon.

In versions of GNOME Shell up to 3.38, metadata.json didn't matter much,
because validation of extensions' metadata against the installed Shell
version was disabled by default; but since GNOME 40 the default has changed
back to enabling the version check by default, in an effort to avoid
issues caused by outdated extensions remaining enabled. As a result,
GNOME Shell extensions in bookworm should probably have a dependency like:

    Depends: gnome-shell (>= x), gnome-shell (<< y~)

where x and y are set according to metadata.json.
gnome-shell-extension-caffeine is a good example of this technique.

When we do the GNOME Shell 41 transition, hopefully soon, we will have
to either update this extension or remove it from testing. It would be
useful to get a fixed version into experimental.

Thanks,
    smcv

Control: severity -1 serious

gnome-shell 41 is now in unstable, so incompatibilities with that version
are now RC. Please upload an updated extension if one is available.

    smcv

Possibly a patch: https://gitlab.com/jenslody/gnome-shell-extension-panel-osd/-/merge_requests/32

(At least some commenter says it works with 41. Did not test myself.)

We believe that the bug you reported is fixed in the latest version of
gnome-shell-extension-panel-osd, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 996068@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Sudip Mukherjee <sudipm.mukherjee@gmail.com> (supplier of updated gnome-shell-extension-panel-osd package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Tue, 12 Jul 2022 22:26:55 +0100
Source: gnome-shell-extension-panel-osd
Architecture: source
Version: 1.0.50.gc032923-2
Distribution: unstable
Urgency: medium
Maintainer: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Changed-By: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Closes: 996068
Changes:
 gnome-shell-extension-panel-osd (1.0.50.gc032923-2) unstable; urgency=medium
 .
   * Add support for gnome 40+. (Closes: #996068)
    - Thanks Fran Dieguez.
    - Modify patch to add support for gnome-42.
   * Update Standards-Version to 4.6.1.0
Checksums-Sha1:
 3de8198648192e42a8ca7eddb8f0b88b1708031a 2229 gnome-shell-extension-panel-osd_1.0.50.gc032923-2.dsc
 9ad67c012ea4407c3933830be2ff192beb4530ab 5028 gnome-shell-extension-panel-osd_1.0.50.gc032923-2.debian.tar.xz
 7c89ec940bf67abf8709c890d7f050e3de724d00 8322 gnome-shell-extension-panel-osd_1.0.50.gc032923-2_amd64.buildinfo
Checksums-Sha256:
 c634093b89be66b092746a005f09abf4aa72ee3da2788f2f3d9b01ed2329998c 2229 gnome-shell-extension-panel-osd_1.0.50.gc032923-2.dsc
 b1532e10f943a0ac59017d4d0a06c94eaccd4ceae677fcf8c2f834efb0ca8ff1 5028 gnome-shell-extension-panel-osd_1.0.50.gc032923-2.debian.tar.xz
 85264f4b6f196fc081962f42cd7ff32709ea5ecda1333d6eb6b6e9be670f6678 8322 gnome-shell-extension-panel-osd_1.0.50.gc032923-2_amd64.buildinfo
Files:
 55af5e07e816972230ac599a13930041 2229 gnome optional gnome-shell-extension-panel-osd_1.0.50.gc032923-2.dsc
 3fb5bcfaaaefa60f019d3bdbced1d1f2 5028 gnome optional gnome-shell-extension-panel-osd_1.0.50.gc032923-2.debian.tar.xz
 a1455004f98152359d7b6f808aac9a8f 8322 gnome optional gnome-shell-extension-panel-osd_1.0.50.gc032923-2_amd64.buildinfo
-----BEGIN PGP SIGNATURE-----
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=2nlY
-----END PGP SIGNATURE-----