I think all the chaos around the treehouse can cause their stuff inside it to get sent flying, which they then blame on you, of course.
Viewing post in (SPOILERS) Are you supposed to lose rep during this event?
Yeah, when I got up in the action, after everything calmed down I noticed the lamp, powerwashers and posters were scattered around that area.
I think I didn't return them to the right spot, so that might be my issue. Left them at the foot of the tree like I do with shrimp donations.
Even though I did have smaller rep losses which I think weren't related to their stuff.