I experienced a bug earlier where I went to throw a smoke grenade, the sound and animation played to throw it but the grenade stayed in my characters hand and I was unable to switch to any other weapon nor open the inventory. I was at the helicopter at the time and due to this bug I was unable to climb the rope and subsequently died.
I do not have any recording or steps to reproduce this bug, the only thing that may help is that I took a boost just before selecting the grenade and may have also clicked the key to take another boost just before I selected the grenade.