Ghost tags

If you click Edit at post #3453363 you'll see tags queen_of_hearts__(alice_in_wonderland) and queen_of_hearts__(alice_in_wonderland)_(cosplay) which aren't shown at the left panel.

same thing with the same tags here post #593497 and here post #397997

Looks like it was added by a typo in the BUR from forum #186926. Double underscores are invalid for tag names though, dunno why it was allowed to go through.