JBV1 muting other apps

I am running JBV1, on a Linkswell android 11 head unit.

JBV1 is muting audio from other apps like YouTube music.

I can start playing YT Music, no audio is heard, If switch to JBV1, then I click the audio icon, bottom right and click sound check, YouTube music instantly starts playing again.

I have checked through all the audio routing settings but can't seem to find a combination that cures this issue.


This seems to have started with a recent update of JBV1.

Any thoughts.