WORLDGUARD-3996 - Reported by OpalMoonstride

WorldGuard 7.0.0-beta01;01dfebe
Spigot 1.13.1-R0.1-SNAPSHOT
Does not occur with Paper

If a item interaction is denied with worldguard flags, but a player right clicks the door, the door will close, and split in half. The door can now be opened, and closed, although the door remains broken, visually.

Second image shows flags.