I have no repro for this bug, but it happens often for me. I always play as Scout, and have smoke grenades, and often when I throw them, I get stuck like that https://steamcommunity.com/sharedfiles/filedetails/?id=1531221867 all the time and can't switch weapon, can't throw grenade, and can only drop this smoke grenade, but if I grab it back on the ground, I'm instantly stuck again middle of throw animation, I can walk run crouch and prone, still stuck like that.