Today I have edited some tag wikis on English Language & Usage; when I edited a question of mine (right some minutes before writing this question), I was said I have already edited 15 posts of mine. As far as I recall, and my activity seems to agree with me: I have not edited 15 posts of mine. The last 15 edits (and more) were all for tag wikis.
Are those included in the daily limit of edits for own posts?
As far as I can see, tag wikis are shown as created by the Community user, when the user who creates the tag wiki is not a 20K user, such as in this case.