So I am not sure if there is a fix and if I am having the same issue but everything you all described is happening to me but Its stuck like that forever... I have left and rejoined servers, played single player still stuck, verified game files still stuck, I uninstalled reinstalled still stuck no matter what call I can do is right click to enter my scope but nothing else. I thought it was a registry file issue so I completely deleted the game with CCleaner and reinstalled the game from scratch and I somehow was still stuck, I went into settings to try and find my issue and there isn't anything out of the ordinary, I rebound my wasd to arrow keys as an experiment and still stuck I don't know what to do, I've sent this into multiple support pages including Bohemia Interactive and 3 people came to my help and all 3 of them literally had no idea how to fix this... Since then they have offered me a new copy of the game but I wanted to see if anyone knew a fix before I took that.