Similar to the post by Wiaderko1_, (I've experienced this in the firing range with the sentinel specifically) if I have the Sentinel (might be other ones idk) in my hand and Grapple with Pathfinder, I can no longer aim, shoot, charge up, etc with it, swapping weapons with Y and in the inventory sometimes fixes it, but it happens again pretty consistently when grappling.
Began right after a 7gb update the other day