IE10 mobile: Menu aligned to bottom doesn't work if page is scrolled

[jakub-g]

I took some time to do Kitchensink QA on my Nokia Lumia (Win8/IE10) :)
Generally everything's working very well, with the two small exceptions:

1. sliders/switches can be in some kind of strange intermediate state when I take my finger from the touchscreen (the equivalent of having mouse button down and not releasing it) but actually I have no comparison to other touch libraries and other hardware, maybe it's normal

2. http://ariatemplates.com/mobile/kitchensink/index.html?smartphone=true#/overlays

The "action menu (bottom)" button works fine if the page is not scrolled, but when I scroll it down, then after clicking the button I only see the overlay but no actual menu. Then, if I rapidly scroll down, I can see the menu for a fraction of second.

I actually managed to reproduce the same thing on Chrome on desktop but only the first time I tried :)

[marclaval]

Both issues reproduced on Nokia Lumia 920