The version of Caffeine in 34 and Rawhide is v37, which doesn't work with GNOME 40. Upgrading the package to v38 would fix this.
FEDORA-2021-6e06f134ac has been submitted as an update to Fedora 34. https://bodhi.fedoraproject.org/updates/FEDORA-2021-6e06f134ac
Thanks for letting me know! I forgot to set up upstream release monitoring for this. The Fedora rawhide build is done, but the fedora 34 update is listed above.
FEDORA-2021-6e06f134ac has been pushed to the Fedora 34 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2021-6e06f134ac` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2021-6e06f134ac See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2021-6e06f134ac has been pushed to the Fedora 34 stable repository. If problem still persists, please make note of it in this bug report.