Random furniture in Personal Quarters not placed by owner

Yesterday I visited my personal quarters to find a huge blue sky panel placed in center of the room, and I didn't put it there nor I purchased it ever. I asked my alliance members and many had similar experience. Some had a pool show up randomly in their room and some had a dark tree. Any idea whats happening?

Random Room Troll. Anyone who enters your Personal Quarters can place down furniture if you have enough furniture points available, though they can't remove any. This is supposed to mostly be so other players can leave you gifts, like furniture you may want or a gift box with items in it, but some people just like to put random stuff in other people's rooms, like creating a mushroom chair forest.

The magical Toilet Fairy had visited your room.