[map bug]Weird bug: Door closing without any apparent reason

[Jive]

Egyptian DOOM V1.0, BY Staffan SHL Linderoth (April 03, 1996)
http://www.doomwadstation.com/idgames/d ... /egypt.zip

-Map01: for an unknown reason (I guess that it's a bug of Doom, because I found exactly the same with Doom Legacy) the sector 154 (door), which should stay opened, was closed when I came back after the discovery of the secret area (sector 175). Thus, the linedef action 892 was : "D1 Door Open Stay - 31"

I already experimented suchg a bug many times with Doom Legacy, but it's the first time with GZDoom. So, I guess that it's a bug of the Doom engine itself.
Of course, like usually, my report of this bug was without any effect on the Legacy's crew...
I hope that YOU will listen to me.

An important detail: this door has not a height of zero, like a usual door, but of 56 (floor= -120 and ceiling=-64). Maybe it's because of that that the bug is happening?

[Paul]

I think it's a map's bug, therefor it doesn't really fit here.

[wildweasel]

Are you sure there's not a W1 Door Close Stay (line action 3) somewhere?

[Graf Zahl]

Sector 154 is tagged with a 'fast open door (closes after 4 seconds)' type elsewhere.
Even when the door is already open it will start the 'open, wait, close' sequence and close the door as its last action. This is clearly a map bug.

[Jive]

Of course, I saw that there was another linedef activating it, with another action.
I guess that a monster came on this line while I was inside the room, and closed the door?!?
Weird!!!
I was inside the room when the door was closing suddently.
If so, yes, it was a map bug... and I ask you to accept my apologies.

But I repeat that I have experimented such a strange situation many times, and I can assure you that there was not another linedef activating it, but only the door and its linedef tagged to open it and to let it opened!!!