Tried it on my laptop. It worked there. I recored the strange behavoir https://im6.ezgif.com/tmp/ezgif-6-396abd0c4783.gif
This is very valuable information. I looked at the script for the falling block and I think I know what the problem is but without your feedback I never would have identified it. Thanks for the investigation CrashApe!
glad I could help.
I just beat the boss. It wasn't easy, but satisfying.
I will do this if its the last thing I do