Default [Q] Email app showing empty preview

Has anyone encountered this??.. the widget display is fine, emails are pushed in and out just fine, it's only the display of the app itself when opened - click on an email in the widget > email opens > hit "back" button > the main display shows an empty list, the emails are indeed there, but the preview is empty.

this started only when upgraded to 4.4.2, everything was fine before.
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Nexus 5
Rooted
Xposed+GravityBox