Missing sights on GLs

Hello everyone,
I currently have this issure with my grenade launchers:
The sights on both of them are missing but I can still switch between them in-game, shifting the view when ADSing.
Does anyone know why this may be? I have tried disabling all my mods and veryfing game files (which found nothing).
Replies
WAC before was able to completely remove grenade launcher sights so they wasn't usable at all. Since HONOUR AMONGST THIEVES still can toggle ladder sight is something else.