This is still a problem for us. And in regards to your comment about “token endpoint being forgotten when auto-selecting front_channel”, I cannot find a field to explicitly set this? Are you referring to a hidden field being cleared or something (like a system bug), or is this something we’re able to fix ourselves?
By the way. The config-endpoint used in this picture is https://demo.identityserver.io/.well-known/openid-configuration, which contains token_endpoint
EDIT: By some reason I missed the last paragraph of your last post. Guess you can ignore this post then. My bad