Thank you very much for this report and discussion! I ran into the same problem.
Following the recommendations found here
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I removed the culprit (Collabora Online) and restored it from the pre-upgrade backup (22.05.14.3~ynh2).
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Managed to save space by emptying the syslog by the following command:
sudo sh -c 'echo > /var/log/syslog'
And the demon.log with:
sudo sh -c 'echo > /var/log/daemon.log'
Things have returned to normal.