It isn't stuck physically, although I had already released the movement key, but ingame character still keep moving to a particular direction until I need to press either 1 key among the WASD key to stop the movement.
It wasn't happen so often, but few times. It happened to me was during I crouch and move left and my character keep moving left after that even I release the "A" key.
Any ideas guys?

i had this happen to me once i unpluged my keyboard and pluged it back in it seemed to fix it

Too bad I'm a laptop user.
Hopefully it's due to the software issue and not the hardware issue. I believe that graphic card issue also might cause this sticky key, correct me if I'm wrong.

It happens to me sometimes when i switch weapons, i press 1 and the weapon changes after 2 seconds.
But that happens like 1 out of 1000 times so it's not a big deal.

sorry man that svcks idk what to say