Some more digging: wmf is on version 1.3.0 of https://packagist.org/packages/wikimedia/equivset#1.3.0 . So I guess this is a request to deploy equivset 1.4.0.

I am not sure if these characters have already been accounted for, but this seems to be getting by the filter as well. https://nl.wikipedia.org/w/index.php?title=Overleg:Sylvester_Stallone&diff=prev&oldid=55148739

In T238995#5694254, @kolbert wrote:

I am not sure if these characters have already been accounted for, but this seems to be getting by the filter as well. https://nl.wikipedia.org/w/index.php?title=Overleg:Sylvester_Stallone&diff=prev&oldid=55148739

https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/libs/Equivset/+/master/data/equivset.in#5484 and other lines cover it.

In T238995#5695550, @kolbert wrote:

"ɪ" doesn't seem to be covered in the equivset - used to get around filter in https://fr.wikipedia.org/w/index.php?title=Discussion:Boxe&diff=prev&oldid=164879040

That's because it's a completely different character: https://www.fileformat.info/info/unicode/char/026a/index.htm

We could add it as well, but then we'd need to release a new version of equivset. Also, I forgot that we need to patch mediawiki/vendor as well: https://gerrit.wikimedia.org/r/#/c/mediawiki/vendor/+/553325/

Anything else to be done here?

@Urbanecm -

In T238995#5694620, @Daimona wrote:

Calling this resolved; it'd be interesting to understand why these characters are popping out so often lately, but that's probably out of scope.

Sounds resolved? 550115 and 553325 are both merged and should be in production. I think a separate bug could be filed for the character frequency issue, if desired. Unless anyone objects, I think we can resolve this task and make it public.