Hi,

There are some issues with the scrolling in the multiple group select control.

Sometimes, the 'A-Z wheel' gets out of sync with the items as you can see in the video below:
http://1drv.ms/1LwBmQY

Also, sometimes, a small drag completely changes the items as you can see in the video below:
http://1drv.ms/1LwBFen

Both those issues happens with Chrome and Safari on iOS 8.

Best regards,