/cage bugs

I had to cage an OP today and they tried to move, but it made more heads (which I assume is normal). However when I uncaged them, the heads didn't break. This was in plotworld.

In Flatlands, I tested the command on an OP (with their permission) and instead of not rolling back everything, it only rolled back the original cage and not the new blocks below.

This isn't really major but still worth reporting.

Edit: also the rollback you see is just me rolling back something the OP did

@wild1145#13971 I specified heads. I will now try it on the head lyicx and the block grass_block.

@wild1145#13975

So on all of the tries I did, even with no blocks/heads specific, there was no layer created when the OP moved. However Shyrix did one on herself and when she moved it created a random layer which hasn't broke. Also if it goes into a build it reverts (findings from my own tests)