Stranger and stranger. See my other ticket.
Changing the DNS server for Roon from my internal to 1.1.1.1 (to unbreak the Qobuz integration) fixes the crasher in Roon for Mac as well. I’m guessing Qobuz has some sort of DNS dependency that a DNSSEC validating DNS resolver breaks, and the libraries included in the Roon client for Mac like /Applications/Roon.app/Contents/MonoBundle/Roon.Qobuz.dll cause the crash because of that (why it would impact the audio code is anyone’s guess).