Please file a bug report if you can indeed isolate/reproduce it (and please ping me on GitHub once you do)!
replyI've made one for Phoenix (as per - it creates a cycle), though unstable compilation is a wider issue.
replyhttps://github.com/phoenixframework/phoenix/issues/6697
In case you want to see files affected I made extended writeup on my blog - for reference. https://xlii.space/eng/elixir-cycles/