I'm thinking this is a bug:  A local extension calls internal dialplan ring group.

If the local extension calls the internal dialplan at 1234 directly, whether bypass_media=true or bypass_media=false it works.  However when that same extension is called  via bridge loopback/1234 in a ring group it fails with 'normal temporary failure' only when bypass_media=true; it works when bypass_media is false.

What am I missing?   I'm going to explore the 'bow out' notion next but I don't see that it applies.  detail:

The ring group lua eventually calls
continue_on_fail=true
hangup_after_bridge=true
bridge  loopback/1234