See this thread history: [1]
Unregistered user 2.144.249.129 changed the thread subject, but there's no log for that IP [2].
Using the log without user filters [3] displays entries for IPs, though.
[2] https://www.mediawiki.org/w/index.php?title=Special%3ALog&user=2.144.249.129
[3] https://www.mediawiki.org/w/index.php?title=Special%3ALog&type=liquidthreads
Version: master
Severity: normal