Assertion failure at SDL_CaptureAudioThreadIterate

[icculus]

• Run testaudio
• Right-drag the default capture device to create a logical device.
• Right drag the headphones icon to create an audio stream of sample.wav
• Drop audio stream on logical device to append more audio data to the end of it.

Assertion failure at SDL_CaptureAudioThreadIterate (/home/icculus/projects/SDL/src/audio/SDL_audio.c:1061), triggered 1 time:
  'stream->src_spec.channels == device->spec.channels'

[addiment]

Would like to re-open this, I just built SDL3 from source (current commit) and am experiencing this issue both in my own code and in the test code. Currently on Debian 12. Running the testaudiocapture program and changing the audio input device will cause this same error message to show up whenever the window is clicked (i.e. to resume the input stream). Perhaps I am using the API incorrectly, but given that the test program also crashes, I don't believe this to be the case.

Assertion failure at SDL_CaptureAudioThreadIterate (/home/addiment/Projects/SDL/src/audio/SDL_audio.c:1257), triggered 4 times:
  'stream->src_spec.channels == device->spec.channels'

If "ignore" is pressed, execution resumes, but audio cannot be recorded or played back, and the "triggered X times" increments.