Hi B
OK it's the scroll bar. Yes is does jump back to the top. I suppose if one is adding clips to the timeline sequentially that might be annoying but why not simply add a block of clips all at the same time and delete them from the timeline if not required. The fact that the scroll bar jumps back to the top wouldn't matter then.
My point is that the scroll bar has to be somewhere so why not back at the top if you delete something from the track? The next clip to be added may not be the next clip down the line. You may want the order to be 1, 15, 6,7, 11 etc. If they wern't close in the clip bin you would still need to scroll around.
Moot point. 🙂
Nat