Not able to remove campfires on tugboats. Even with admin mode active, it wants to target the tug rather than the campfire. Haven't heard of any other issues.
Screenshot
Campfires on Tugboats
Appears to not work with sandbag barricades either. Just when deployed on the tug.
Just tested tonight something similar, you can't remove any workbenches or the locker when placed on the tugboat.