E3M4 crushers buttons shouldnt trigger
E3M4 crusher's buttons should not be triggerable when they are moving. This could cause major desynchronization in demos and maybe gameplay.
I can't check vanilla Doom right now so it should be worth checking out if that is the intended behaviour or not.
Mentioned crushers appear at 2 minutes in this video https://www.youtube.com/watch?v=FomH9d0tPjk