When I open a PDF on the iPhone XR, then take the following steps, the app crashes:
-From vertical orientation, tilt to horizontal position.
-Tilt back to vertical position
-Tilt back to horizontal position
-Tilt back to vertical position - app does not reorient the page correctly freezes, then crashes after a few seconds.
(I even tired this with with the Xodo Getting Started PDF provided with the app to be sure it was not one of my documents causing the issue exclusively).