I have created unity plugin for android and using it in android application. AR detections and 3D rendering everything works fine. But for particular case with ARCamera I am facing following issues :
A. When ARCamera is paused
1. Android application in background and come back in forground then ARCamera background is lost and showing blank screen.
ARCamera Started==> ARCamera Paused==> Application Background ==> Application foreground ==> ARCamera black screen
Attached screenshots for reference
1. ARCamera Paused
2. Application background
3. Application foreground