So I switched to ExtJS 4.1 nightly, and I noticed something very weird. Most of my components including toolbars and grids started scrolling horizontally. They scroll for a looong time before coming to a stop, and as I begin to scroll, the content begins to go left and disappear.
For example, my toolbar content started scrolling on 4.1. This is inside of a panel:
Quickly wanted to see whether there is a known issue transitioning from 4.0.7?