Issues with form fields in the popup in Mobile safari

[arunstan]

If you try to tap on input text fields added to the popup, mobile safari (iPhone) causes the popup to wobble up and down

[jussivirtanen]

I have the exactly same problem. When moving from field to another the popup seems to scroll somehow.

[Zeg31]

Same here.

When I insert a simple select-field in the basic example, I can reproduce the error.

In iPad Air all is fine, in iPad 4 and iPad Air 2 (both Version 8) the popup is broken, when I touch the select-Field.