Idk man, as I said, I tested it all the ways possible and I can't seem to be able to softlock the level, even if I'm out of the room for literally 5 minutes. There's LITERALLY no other trigger/script that destroys this specific "ending" trigger, so there's no possible way for it to despawn.
Update: https://drive.google.com/file/d/1lUtKjnrIXCvzLz38usNhb1d8DukZ3yIT/view?usp=shari...
To apply the patch just move all the files to your game folder (make sure it's the updated version)
LVL12 Was patched so the trigger now it's above ALL the level floor now, included the hallway. Its literally impossible for the player to skip the trigger and it worked again perfectly with me.
YEAH, RIGHT? I literally had TE 2.1 not even 2 years ago! But I didn't imagine it could become lost media so fricking fast! Also did you know you can open any level you want through the Sad Satan standalone .exe? Just go through the "Levels" folder and rename a level file, for example: "12" to "1" (The game WILL ALWAYS load "Level 1" first, so you can change any levels name to trick the game into thinking that's the "Level 1"). I always test the game this way.
Anyway, here's an update: https://drive.google.com/file/d/1mufRbsqqVizfta0r4C_knctIxITvCoek/view?usp=shari...
I don't have so much time this morning, so I could only test level 12 (I just reverted the timer thing and it works exactly as the older version you mention). I did fix level 2 too, but didn't test it.