1.0.2 UPDATE PATCH for CALL of DOOM: TARKOV (Ver 1.0) file

I have tested the SD & HD flashlight, night vision functions and did not find any issues with it.
In map 1 of DOOM2, I tried leaving the map with the SDFL on, leaving the map with the HDFL on, and leaving the map with both on at the same time. No problems were found there.
The SD flashlight and night vision will be reset each time you exit a map, and can be turned on again by pressing the ON button when you start the next map. Only the HD Flashlight can remain lit in the next map even after escaping the map (due to the more advanced scripting used).

If this isn't the feature you're talking about then it's probably something else you're using along with the COD mod that's causing the issue.
COD MOD players have a built-in program that resets the switches so that they can use the SD flashlight and night vision again when they start a new map and the engine forces them to be removed.
This means that if you have an add-on running that changes this COD mod player into a different nice guy, or an advanced custom map mod running, they may ignore the reset function of this switch.

If this is the cause of the bug, then there needs to be a simple but advanced script that will force a check for the flashlight switch no matter what custom mod character is being used as the player.
At the moment, I don't know of a perfect solution (it's impossible to check the compatibility of all existing mods completely).

For now, all you can do is be considerate of the environment and turn off your flashlights diligently, even though it's a hassle.