Certainly does look suspicious. I can’t think why it ever worked! It must be a bug in the soundcard firmware that the previous Kodi managed to ignore. If you say the name has changed, that’s suspicious too - we’ve done nothing to change how Kodi presents USB soundcard names but maybe it’s been changed upstream. I’ll see what we can do.
If you have another linux system (PC or RPi maybe), can you run amixer contents on that for confirmation?