Steam Controller randomly shoots on its own.

Coming to say this is also happening to me. On rare occasions it doesn't happen but it's very prevalent and is really impacting my experience. When on foot / in ground vehicles I use Mouse / Keyboard but power on the Steam Controller for flight, during which time the weapon on the vehicle will repeatedly fire. If I get out the weapon will also fire repeatedly. It's also worth noting that even when this issue isn't occurring, (weapon firing), having the controller on while using mouse / keyboard causes aim down sights to jitter periodically as if it's "un-scoping" and "re-scoping" making gunplay difficult.