How to reproduce:
click button to write an email. Start writing the email.

Actual Outcome:
Email window opens but zoom is too close to see the text you are writing (see screenshot). There is no way to zoom out of the window.
(Same problem when replying to an Email)

Expected Outcome:
Zoom should fit the phone window, so that it is possible to see the screen and text you are writing.
If the zoom is too close it should be possible to zoom out.

This problem does only occur with IOS.