I think this whole flashing issue on IOS is because of the device-height.
if in the index.html meta content you set height=device-height, the whole flickering problem during page transition is totally gone, but then you have these problem with the page content too long and a scrollbar always appear no matter how little content you have on your page. if you dont set the height to device-height, well, you get this hellish annoying blinking. I think its because the device-height is till used to calculate some values in jqm, and in the end the difference in device-height and actual screen height differs, which cause this reset every time you load a new page, thus the blinking.
I tried with 1.3.2, 1.4.0alpha2 with height set to device height with no flickering at all during the page transition. but without height set, well...
So is there anyway to fix this somehow?
IOS device 6.1.3