IF you use the IZH, with gloves on, the rear of the gun in ADS has clipping, making it slightly distracting & annoying when in ADS.

Also, one bad bug I discovered, is if you reload while in ADS, your hip-fire weapon representation will become bugged, and extremely distort your aiming, cover your screen, and it seems that the gun is pointed to your eyes like in ADS, rather than just point-aiming.

Bad bug, needs to be fixed, especially when crouched (it covers up a lot of your screen)
(towards the end of the video)