Beta 020 - cursor jumps multiple lines

Frequently, with no pattern that I was able to find (maybe linked to a cut-and-paste), when I press the up and down cursor keys, the cursor stops moving from line to line and starts jumping multiple lines. Sadly, Beta 020 is unusable for me.

I’ll have to test with cut and paste, but I know this happens (and was reported) after you use Undo. Switching to another document and back fixes the problem in that case, so it likely will here as well.

Thanks, we will look into this as well.

It’s still a problem in 021. Does seem like it’s linked to an undo, which makes it a significant problem.