Bug: the ability to change tags to previous states on a deleted post, via the "revert" option in the tag history
Expected behavior: tags remain how they were immediately before the post was deleted, through the lack of an edit button.
Actual behavior: tags being able to be edited to previous states, regardless of when the image was deleted.
Instructions to replicate: go to a deleted post, example , and click the tags link under "history". Click the state you want (not the post # link, user link, etc.) and the state will turn dark green. Click the revert button underneath, and it will revert the tags on the post to the state you selected.
The example I provided should show you what happened, but in case I missed any details I can try to answer anything else about it. The tags cannot be completely edited, but they can be effected nonetheless.
Updated by Chessax