The cursor will continue to scroll down but the inventory ui stays locked to the equipment/gear, and 1 open gear tab. Scrolling down will also go through closed tabs such as equipped weapon attachments as well as helmet visor slots ect. Tab down feature will get stuck hovering over certain items in gear's inventory. Head torches and nvg are not able to be activated/toggled but can still be turned through quick wheel. Restarting the game/rejoining did not reset or fix any problems.