Another issue regarding Mastodons quirks: Undos are referred to as .../users/mariusor#follows/{id}/undo

o.O

The ActivityPub spec requires unique IRIs for all objects. According to MDN (emphasis mine):

> An anchor represents a sort of "bookmark" **inside** the resource, giving the browser the directions to show the content located at that "bookmarked" spot.

So, relying on anchors for uniqueness is incorrect.

#mastoquirks