I expect we'll get logspam from ProofreadPage on wikisource wikis caused by the deprecation of dynamic property access (https://gerrit.wikimedia.org/r/c/mediawiki/core/+/1004257).
This is patched in master at https://gerrit.wikimedia.org/r/c/mediawiki/core/+/1020249 and https://gerrit.wikimedia.org/r/c/mediawiki/extensions/ProofreadPage/+/1020250 -- both patches are necessary because ProofreadPage does an `unset` on the property, so without 1020250 the declared property will become dynamic again after the `unset` and start emitting deprecation warnings again.
I will prepare backport patches for 1.43-wmf.1 for these, but I may have intermittent connectivity over the next few days (presenting at MWUD 2024 conference) so I wanted to make sure there was a task and explanation here to empower SREs to handle the backports (and any similar log spam that may arise) in my absence.