Scroll bar is twice as long as content + scroll is faster than before

Two issues, probably related:
a) Scroll bar is twice as long as content for some pages (I'm using jqm latest). E.g. when one scrolls to the very bottom, the scroll bar is only half way down.

b) Scrolling performs faster than before (closer to the speed of -webkit-overflow-scrolling:touch; , but without the overscroll elasticity)

I am running two versions of my app side by side, one in each version, so I believe it's a cordova issue, as the content is the same on both.