3D floor camera glitch

[Dancso]

Hey.

I happened upon this weird anomaly while playing the mappack "Remain 3":
https://youtu.be/N-LFN0zOFYE
Seems to only happen on the pillar's east side, and only while the centerpoint of the player's bounding box is within the pillar sector's Y axis boundaries.
It only affects the camera, gunshots will project from the intended Z-height.

I tested:

gzdoom-g2.2pre-476-g0931134
gzdoom-g2.2pre-428-g012f104
gzdoom-G1.9pre-772-g09a68e8
gzdoom-r1547

zdoom-2.8pre-1625-g7338733
zdoom-2.9pre-142-ga5f6c6c

It happened in all gzdoom versions and none of the zdoom versions.

It is on map 11, in this location: (highlighted by the orange rectangle)
http://i.imgur.com/aJIXkpb.png

There is some funny business with the pillar itself, it is created by some odd trick, as GZDB doesn't show it in visual mode: (there doesnt seem to be a 3D floor action line for it either)
http://i.imgur.com/9GyV9B5.png
It seems to go below the surrounding floor because it produces a visible glitch in zdoom:
http://i.imgur.com/8ceG5Np.png

Here's the link to the wad:
https://www.doomworld.com/idgames/level ... s/p-r/riii

[Graf Zahl]

That's poor use of self-referencing sectors (the inside of the pillar) , so it's not fixable without breaking other stuff. I consider this a mapping bug.