could you screenshot the level where the yellow pieces did nothing? We'll try to fix it after ratings are finished.
Thanks for playing!
This was the best I could do:
With an alternative way of moving one block out of the way:
Both of the yellow blocks here don't block any other block from moving (upper left one: entirely, you don't need to interact with it at all and it could be gray. lower right one: only in some positions including its initial position, it could be blue).