"Convergence Chamber" Lights can be Seen Through Doors on Mars City Underground

[mmillar-bolis]

Describe the Bug:
At the beginning of the level Mars City Underground (game/mc_underground.map), the player receives their gear ("Mars Sec. radio check") and then proceeds through the unlocked door, down the stairs, and through another door into the "Energy Stabilization" section of the base. Behind the stack of crates to the left, Mr. Rodgers pops out to spook the player. To the right, however, is a door labelled "Convergence Chamber - 1". In that room there is a light that revolves roughly every five seconds. However, before entering that room, while still near Mr. Rodgers, the light in the next room appears to cast across the opposite side, e.g. the closed door.

There is more than once instance of this rotating light, but they all seem to cast through the closed doors to their respective areas. While still present with all of the extra lighting effects, the issue is most pronounced when playing with set r_useSSAO 0; set r_useHDR 0; set r_useHalfLambertLighting 0; set r_forceAmbient 0.00; set r_useShadowMapping 0.

To Reproduce:
Steps to reproduce the behavior:

1. Load game/mc_underground.map or begin a new game, follow the Sentry Bot, and board the elevator to the next map.
2. Wait and fetch your gear, then proceed down the linear path and into the "Energy Stabilization" area.
3. Wait outside the door to "Convergence Chamber - 1" for merely a few seconds.

Expected Behavior:
This bug does not seem to occur in vanilla Doom 3 BFG. When standing outside of the "Convergence Chamber - 1" room, the closed door facing the player remains darkened.

Screenshots:
Using set r_useSSAO 0; set r_useHDR 1; set r_useHalfLambertLighting 1; set r_forceAmbient 0.01; set r_useShadowMapping 1:

Note the light and shadows cast across the bottom half of the door in the second picture.

Using set r_useSSAO 0; set r_useHDR 0; set r_useHalfLambertLighting 0; set r_forceAmbient 0.00; set r_useShadowMapping 0:

Desktop:

• OS: Windows 10 x64 (21H2)
• GPU: Nvidia GeForce RTX 2060
• Version: Doom BFA 1.3.0 win-x64 Nov 14 2023 19:23:45 (Nightly build 6a150f8)