The secure door is both reachable and unreachable at the same time

For some reason, it's been the case for me that only coming from the left of the door works to submit the bioscan and open the door.

Yes, I've seen these bug reports from 2023'ish. Even older maybe.

My concern is that somehow exactly one duplicant is considered as "can reach it".

It's Cycle 9 of VERY lazy digging for a new colony, there's simply no way that only one can reach it while other three can't.

(and yes, Yellow Alert don't work as Yellow Alert for this specific door somehow: it's still 2nd in errands list despite there being nothing of higher priority for anyone)

Edited March 17, 2025 by EustaceCS

Yeah, I don't get the security doors very well either.  Neat concept, tedious implementation.

I'm having the same issue on my play through. I have turned all the priorities except for toggling off on any dupe that even remotely shows that they even had it queued up. I've even left them alone to do it on their own time for 100 cycles and nothing works. I'm on windows 10, all dlcs most recent update on the stable build. 

@DupeSyn

Spoiler