No sound since ALSA A52 plugin update
The commit that triggers the issue: https://github.com/alsa-project/alsa-plugins/commit/47b6c3c415fd01c9c0a639e465c4113a8c0fc81a
For reference: https://github.com/alsa-project/alsa-plugins/pull/8
I should've opened this issue months ago, sorry about that. The libasound2-plugins package in Debian Testing is now at version 1.2.5, which includes the commit.