Dolby atmos not working in Apple Music after update to 14.7

i previously enjoyed Dolby atmos on Apple Music on 14.6 with my wired headphones . However , from the day I updated to ipadOS 14.7 , it stopped working , even with “Always on “ in the settings for Dolby atmos . It would work only with my airpods and my headphones like previously …..have any idea why ?

Apple support hasn’t been of help at all for the past few months