In T115#2084, @Justarandomamerican wrote:

I think it might be a bug in the UserMerge extension, which was previously used to merge Nexovia and The woman into one, and delete Nexovia.

In T115#2086, @Harvici wrote:

@Justarandomamerican I believe you should update the database, as it is possible that some references to the old user were not updated properly in the database

Weird, for a specific IP address. Any idea what's causing this? Is there an upstream ticket on Wikimedia Phabricator?

In T59#1059, @MacFan4000 wrote:

If it doesn't seem like it's installed then it's probably down to caching.