Airplay from iPhone 12 to Apple TV 3rd Gen no sound handover

Hi all,

I hope you can help.

Since the iOS 18.0.1 update, my iPhone has not been able to send sound to two of my 3rd Gen Apple TVs.

The symptoms are strange, I can select the device (see screenshot), it connects as usual but the sound keeps playing on my iPhone. There is no issue on the iPhone 12 mini, no issue on the iPad Air 2nd gen, iPhone 6s, or iPhone 7 Plus. I can Airplay to Apple TV 4K Gen 1 but both of my Apple TVs Gen 3 behave the same.

Apple if you are reading this can you please check the latest update if there are some issues?

If anyone can replicate the problem please let me know! Or if you have a suggestion/solution. Both, Kitchen HiFI and Boys Den are the 3rd Gen.