Github user renoth commented on the issue:
https://github.com/apache/wicket/pull/287
Also i had to include the junit-vintage-engine in wicket-cdi and
wicket-arquilian because there is no compatibility for Junit5 with CDI and
Arquilian at the moment. Junit4 and Junit5 tests can run in parallel. IDEs
already support this, maven surefire per default as well since the latest
version 2.22.0.---
