Yup, this happened to me. Android Auto worked yesterday, but not outputting any sound today. I combed through logs and did tons of troubleshooting earlier, but could not figure it out. Glad it’s a known issue, at least.

This is why I don’t ever update until I’m forced. Probably a bad idea for security sake but here we are. Either it doesn’t work, or it gets hacked and it doesn’t work.

After quickly searching saw you can disable automatic updates in developer options. Since I use AA exclusively I don’t want it messing up!