I had this same problem a while back.  Truns out that I was typing lazy. Try not resting your palm or hands on the any part of the laptop.  Somtimes when you put pressure on non keyboard part it will cause this to happen.

This can also happen if you inadvertently brush or tap the touchpad when you are typing. You can adjust the sensitivity of the touchpad so that light brushes or taps do not register.

Thanks so much. I guess I'll have to type better. :emotion-1:

Same for me, but a new keyboard helped that thing as well... But, I can tell I am typing lazy...