I just discovered something…I think. I’ve been so frustrated when typing on my laptop. I’d move the insertion point and start typing, but text would go somewhere else! I started wondering if it had something to do with having the touchpad activated while I was using an external mouse. I had no idea, but thought I’d try it.
I hit my touchpad to deactivate it (on my HP laptop, I have to hit the upper, left side hard and twice pretty fast).
Well, I haven’t had this happen since, so that must be the fix. And since I use an external mouse anyway, I haven’t lost any functionality.
If you’re having this problem with your cursor jumping around, try this and see if it works for you (depending on your laptop, the method for deactivating your touchpad might vary). Let us know in a comment if you did something different that worked.