I have the same problems with my iPhone X with LG bluetooth headphones. It also happens more often in my car while using bluetooth (Not CarPlay.) I just updated to Beta 4 so fingers crossed it is fixed.
JosephSmith
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution