I tried updating my phone to the final 11.4 build and my watch to 4.3.1 today. Still the same problem with initiating music from the watch. Are you still noticing the same problem?I try to do it on the Watch without Siri and the same thing happens. 11.3.1 is fine in this regard, though.
Delete the beta profile and reboot your device.Anyone on 11.4b6 see the 11.4 GM upgrade option? I see it on the Apple Dev site but not as an OTA option from my phone.
I tried updating my phone to the final 11.4 build and my watch to 4.3.1 today. Still the same problem with initiating music from the watch. Are you still noticing the same problem?