Looks like when wielding a weapon from Vic's Modern Warfare Mod, the hud gets affected as well as f3 screen.
https://i.gyazo.com/57374dc3b4db5d44acf921ec41898e80.png
https://i.gyazo.com/b33198228cd30b74b2363cb5a80a0615.png

Checked mw mod by itself and f3 screen is fine.

Running 1.11.2-3.6.6