As of yet I haven't tried out the full extent of this only a few times to see if its repeatable, which it is.
Place a pixel block in one of your guest rooms. Then place a second pixel on top of it but before it appears click the former block again, so basically double click the first block whilst placing the second. Now you will have the bottom block highlighted. Now any action you use on this (I think, I tried move and rotate) instantly crash the game.
Upon logging in after crashing the game, if you rotated the block then it will be sat upon the second block you placed rotated.
As I said haven't tested out the ins and outs of it, accidentally did it, tested to see if repeatable and left it because I didn't want to keep crashing myself out the game.
Place a pixel block in one of your guest rooms. Then place a second pixel on top of it but before it appears click the former block again, so basically double click the first block whilst placing the second. Now you will have the bottom block highlighted. Now any action you use on this (I think, I tried move and rotate) instantly crash the game.
Upon logging in after crashing the game, if you rotated the block then it will be sat upon the second block you placed rotated.
As I said haven't tested out the ins and outs of it, accidentally did it, tested to see if repeatable and left it because I didn't want to keep crashing myself out the game.