I ve been experiencing this very weird effect since a few dev builds…
I am at the end of my text. Last lines. At some point, when I press the up or down arrow keys, or even click inside the text,
the text starts moving upwards along with the line numbers, as if I was scrolling downwards !!
Has anyone had this problem?

it turns out it was a plugin problem… it’s either a theme (blacklion?) or ZenCoding.
I didn’t need either, so problem solved
btw I bought ST2 today. I had said I wouldn’t until full documentation was available, but I’ve been using it more and more, so it seemed kind of unfair…
thanks Jon for this excellent piece of software!!