iOS ion-input/ ion-textarea cursor/ selection issue

i am facing a vert strange issue.
I have create a latest ionic application and add some input fields and build the app on iOS real device.

Now when I start typing on input field and selects the text and then scrolls the content. The selection/ cursor is overlaying with header (although the field is behind the header).

Correct Behaviour should be the cursor/ selection should be underneath header just like the input field but its not happening.
This is very strange behaviour, anybody have solution for this?
Thankyou in advance