User blog comment:DaNASCAT/Technical Update: November 21, 2016/@comment-24055022-20161122031735

Adding to the below, there may be a bug where you get notifications from wikis you've never even edited on or am following a thread, and it's not a highlight either because right now I'm seeing I have 5 notifications from the Plants vs. Zombies Wiki, and I have never contributed to it before.