Hello again,
When multiply doors open at the same time and are next to each other sometimes create a phantom block that has collision. It will disappear if the door is updated or after a few seconds.

Thank you for reading.

This might be fixed in the upcoming release. I hope I can release it soon, I would be very happy if you could test it once it is out.

Of course, I will post my results here.

pre123 has been released. Can you see if this issue still persist? If yes can you send me your world?

Yes the issue still persists. I tried to recreate it but I crash when selecting sliding door, added the crash report here. I did remove chisel so there might be odd shadows here and there. Lastly, you should spawn near the stairs if not, here is the cords (1079, 17, -937).
(Edit: It doesn't always create the phantom blocks might have to press it a few times.)

crash.txt

DOORS! Backup #2 - Copy.zip

Can you send me your log file? Something must have happened before the crash.

Your issue has been fixed and will be part of the next release. Most likely in a few hours (once the crash has been resolved as well).

Thank you, it works fantastically now. Sorry was at work couldn't send you the log.