When you scroll, the active verse number at the top bar is updated when you release the finger.
It could be nice if it is updated as you have the finger down and is dragging.
now you can basically drag it quite a bit and it may be a few verses off.
I tend to look at the number when i drag.
if i wanted to open a certain verse number in the same chapter i might drag until i see the rigt number in the top bar.