This question shows as being Community Wiki on the question page. However, if you check its revision history, it shows that a moderator removed Community Wiki status.
Additionally, I tried answering that question as a test (10k-only), and it was also marked as Community Wiki, by virtue of the question being such. There was no checkbox to select it for myself.
Why does it continue to show and behave as Community Wiki, even though a moderator removed its status?