Audio forwarding for FM Radio doesn't work

[CheerfulPianissimo]

• [x] I have read the FAQ.
• [x] I have searched in existing issues.

Environment

• OS: Archlinux
• scrcpy version: 2.1
• installation method: pacman
• device model: Samsung Galaxy A31
• Android version: 12

Describe the bug Open the FM Radio app and choose a station to playback. Neither the "Play through Speakers" nor the "Play through headphones" option causes the output to be routed to the desktop app. Audio forwarding works for other apps.

No errors are displayed on the console.

~ scrcpy --no-video                                                               
scrcpy 2.1 <https://github.com/Genymobile/scrcpy>
/usr/share/scrcpy/scrcpy-server: 1 file pushed, 0 skipped. 297.0 MB/s (56955 bytes in 0.000s)
[server] INFO: Device: [samsung] samsung SM-A315F (Android 12)

[CheerfulPianissimo]

I've also noted that the other reliable method of forwarding audio - via turning the PC into a bluetooth audio receiver also fails, albeit more gracefully. The radio simply stops when bluetooth forwarding is enabled.

[parkerlreed]

This is especially weird as the built in screen recorder capturing "Media" works fine for the radio.

Moto G Stylus 5G 2023 Android 13

However for the Motorola, Bluetooth back to PC does work for the FM radio.