Can't move wall decoration

[hot pond]

Tried to put wall decoration behind the bed, and it slowly sank down through the floor with each click and then got stuck there. Can't select it (i'm guessing the hitbox is underneath the floor now :()

I'm playing on steam, latest game version. v1.1-1226

How do I use the back-up save to revert this?

[obtuse nymph]

Hiya @hot pond. Thanks for notifying us of this issue!