I have a Fold 5 that I use all of the time for music with bluetooth, in car and on earbuds.  Updated my phone on May 19th.  On the 20th I got in my car and the bluetooth would not work even though the phone was connected.  As an added bonus I could not even switch back to the radio.  As soon as I turned off bluetooth on the phone I got the car radio back.  Later in the same day I attempted to use earbuds.  The volume was extremely low and could not be adjusted at all.  I couldn't even turn the volume down, absolutely zero volume control.