level 12 has an interesting bug.if you 1st jump down, you get a bigger box in the middle view. but what's funny is that if you jump out and fall back in(without landing in outer view), your block just multiply
I solved level 16 in a similar way, not sure if it was a bug.
first, jump into the bottom box, then jump out
this glitch is more of an exploit, not a bug
pretty sure thats intendedsince you jump out of 1 and land into 2 go back into 1 with 2 blocks going in..if you go out and land you also "make" 2 blocks. they will just need 2 moves if you want to put them both back because they dont act as one anymore