I just marked this bug as duplicate of bug #1089966 . It seems that the jump is relative to how much scrolling is done on the other application. If on the other applicatino you scroll a lot, but then scroll back to the original position, gedit will behave normally. Basically, it would seem that saves how much scrolling was done in the other applications and apply it to your gedit document, when you try to scroll there.
This is very very annoying. Try debug a long file (a program can easily reach a thousand lines), go google for some documentation, and then come back to have the piece of code you ewre looking at before dissapear.
I just marked this bug as duplicate of bug #1089966 . It seems that the jump is relative to how much scrolling is done on the other application. If on the other applicatino you scroll a lot, but then scroll back to the original position, gedit will behave normally. Basically, it would seem that saves how much scrolling was done in the other applications and apply it to your gedit document, when you try to scroll there.
This is very very annoying. Try debug a long file (a program can easily reach a thousand lines), go google for some documentation, and then come back to have the piece of code you ewre looking at before dissapear.