With T48148: Allow hiding of non-discussion comments in Gerrit we got a super-helpful "Only comments" switch in the Gerrit UI that would hide all auto-generated comments. It appears like this broke with T262241: Upgrade Gerrit to 3.3. The switch is gone.
As far as I can tell that switch is a native Gerrit feature. See https://gerrit.wikimedia.org/r/Documentation/rest-api-changes.html and search for autogenerated:. It relies on our CI jobs to mark all non-comments as such. I had a look at the Gerrit documentation but it doesn't look like it's even possible to turn this feature off. So what broke?