User blog comment:Brandon Rhea/Wiki domains will be changing from wikia.com to fandom.com in early 2019/@comment-36574594-20180815173538/@comment-1038387-20180815175954

That's a cache bug that pops up every now and then, if someone else with different language settings edits or views as well. Or something. Been going on for ages and as it isn't really breaking, it's never really fixed.