I have older system (4.5.0.25), but fresh flashed onto device a week ago, and made also strange observations.
After opening an e-mail it appears in tiny letters the whole mail compressed into the tiny screen.
scrolling is not possible.
Magnifying the image by Two finger gesture enables the new one finger up down zoom fearure.
This feature heavily malfunctions (on my device):
It magnifies also the top header bar until it covers most parts of the screen or the whole screen. Therefore, mail text is unreadable.
Also automatic line break is not working.
Double tab disables the new zoom gesture and mail is again displayed as written above.
Mail app is in unusable state at the moment.
I’m sure there’s a bug especially in the latest mail app version because all other things on the phone working fine.
Any tweak possible to disable the new finger - zoom feature for testing?