When I play games, it seems like the A/D keys like to get stuck, and it really messes me up because the only way to fix it is to click the button again. I'm using a Razer Blackwidow Chroma.
Pull the key off and make sure nothing is under it. If it's clean then I would send it back to Razer because that shouldn't be happening. Especially with a keyboard that expensive
The weird thing is I only see it in games, I type a lot and it never does it outside of Dota (Which is like 90% of what I play), but if it's Dota, I'd be lost as hell to know how to fix that other than probably reinstalling.