Hi guys.
Has there been any further development on this issue?
I can confirm that although your components work on a lowly Nokia Lumia 520 running WP8 they are dead as a do-do on my Nokia Lumia 1020 running WP8.1
I started building a proof of concept using your grid component but once I deployed it and checked on my phone I found to my horror it was unresponsive!
I have checked your mobile demos and can confirm the same problems exist there; grid, combos and other components which require scrolling etc don’t work at all on my WP8.1 device.
I will try to find other WP8 and/or WP8.1 devices to check. What Windows device do you test with?