App flicker a lot in ios when keyboard is open and try to scroll the view

I am facing a strange issue in my app in iOS only. when tap on input field and try to scroll the view. Whole view start scrolling up and down. You can can not adjust the input box.

Tried with various things like
installing keyboard plugin
disable native scroll
tried with some css

But still the problem persists with same behavior.

Any one face the same issue?