Hi,
It seems there is a glitch with bow attacks (at least flurry and normal attacks) when you pass the meat grinder section going east up the hill corner. If you try to fire on the hill, no arrows come out of your character and don’t do damage unless the enemies is touching you.
I have actually had this happen a few times during the main quest but it wasn’t consistent until the Titan’s pass section where I can stand there and fire and nothing will come out.