@maxmp i just upgraded the latest build and I don't think it made any difference for me. First of all I need some clarification and then I will share my observations:
1. After upgrading, I just used Amazon music and YouTube official app but both did not work for me.
2.Rebooted the device and waited for EQ to get initialized, after that used both of the app but it did not work.
Note: Only workaround that works for me is to disable the notification of mxp and enable it again in Equalizer.
BTW my device is one plus 6T. And I have enabled advanced player tracking as well.
Please suggest me if anything needs to be changed and should be tested.