Unity 2018.2.5f1, using the same setup for the last few months without issues. We updated our Vuforia support from 7.5.26 to 8.0.10. The Vuforia camera background is now black on Android (but everything's fine in the editor).
Reading the ADB device logs, the vuforia initialization is successful, ARCore enabled and so. Then I start to get these:
01-11 08:47:34.129 4259 11146 D SensorListener: Sensor(8) valid data is not coming yet!
And this almost every frame:
01-11 08:47:34.463 4259 4708 E ExynosCameraRequestManager: ERR(m_push):m_push failed, request already exist!! Request frameCnt( 4 )
01-11 08:47:34.463 4259 4708 E ExynosCameraRequestManager: ERR(pushFrameFactory):pushFrameFactory is failed StreamID(16) factory(0xeb880000)
Tried on Galaxy S8+ and S9+
I tried to revert the file VideoBackground.shader but it doesn't solve the issue.
I can see in our logs that the image target detection works under the hood.
Do you have any clues? Thank you
edit: Using LWRP