Any chance Medium/High graphic setting Infravision bug gets adressed as well in that hotfix?
The one that makes game go brighter and brighter each time you respawn.
Unaware of that one. Could you paste your useroptions.ini settings?
I can ask QA to try to reproduce the bug and get a task in.
We just (this morning) figured out what's breaking this, but not why it's breaking yet. Either way, we should be able to get this resolved in for a hotfix some time next week.
You can equip a different attachment in the rail slot to fix this issue, as others have stated... However, it should also be fixed in the next update regardless, as this is caused by the same loadout bug that can reset weapon loadouts.