Half-Life HUD ammo not updating

My HUD ammo counter seems to be stuck on certain weapons, is it possible to refresh the HUD? Not sure why it’s broken.

Made a short video to describe the problem:

Source has hud_reloadscheme for this, I believe GoldSource has something like that too.
Sorry, don’t have HL installed.

yeah, know about that command, can’t find any for gldsrc tho

Ended up reinstalling Bunnymod pro, not sure what caused the problem.