Empty response with Keycloak 3.4.1 on Wildfly 11 + Elytron

Question

I upgraded my application to Wildfly 11 and Keycloak with the new Elytron adapters, but it stopped working. I'm using bearer tokens to authenticate an angular application, I think it's something related to CORS because when I manually remove the "Origin" header, the request works and returns the expected result, otherwise it will return an empty response.

1. This is the correct response (notice I unchecked the Origin header)

2. This is the empty result

Answer 1

This is a keycloak bug in version 3.4.3-Final

See: https://issues.jboss.org/browse/KEYCLOAK-6414