I found a softlock: In the Ice puzzle room, when you enter and slide to the other end, turn back and place the block, then you will kick the block and slide behind it, back towards the door. The block goes through the door, and stays there, out of sight, and you keep sliding, unable to enter the door or do anything else.
(I think adding in a check for the block for going out of bounds/interacting with doors and then destroying the object should fix it)