Wormhole Bug: In an editor level with a width of 4 and a height of 1, place Mover Cells in every cell except for the middle-right one, where the Wormhole Cell will be placed. After placing the Wormhole Cell in its spot (it should look something like this: 
), turn on Wrap Mode and press the Play / Pause button. Once it reaches Tick 2 (or Tick 34 if Subticking is enabled), a stack overflow error pops up.
This is the smallest formation that I found for it to cause an error. Fix it if ya want, but like you said in its description, it can be buggy.