Known iOS scroller issue?

[rcmills]

I am using native controls in scrolling fields in an iOS app, and have noticed that when I have scrolled to the very bottom of a field on the iPhone and then tilt the phone back towards being parallel to the ground, the text jumps almost an entire field height. This is not enough of a tilt to trigger an orientation change (I have set an interrupt in the orientation change handler and checked). Is this a known native scroller issue?

[rcmills]

Oops! It was an orientation issue. I change my trap and found there is an "unknown" orientation which wasn't trapping for ...