Bug on Gesundheit

When I try to attack a stone created by Grave Digger with Gesundheit 2 lines away, I can’t do it, the option doesn’t appear.

Unfortunately thats not a bug, flying phobies cant attack created buildings because they can stand on them, the only way for you to damage a building with a flying phobie is if you use its special ability, for example, murder wings monty ability, but with stuff like gesundheit… you just cant attack it