I’ve had the same issue on two different Android players. The Xibo Android client that I’m using is version 3 R302. The Android OS version is 9. I’ve found that downgrading to 3.0.3 seems to resolve the issue.
This is an update regarding the issue reported by users on this topic. The development team have been investigating this further and an issue has been discovered and written up. Here is a link so you can track its progress:
The fix is due for release in 3.0.6. I can see that some users have found that the issue does not occur in earlier releases of Xibo CMS, which you may wish to revert to while the issue is resolved.
Thank you all very much for the information you provided about the issue.