I have a WF 9.0.2.Final in a Docker container, started with the debug flag in the command line :

CMD ["/opt/jboss/wildfly/bin/standalone.sh", "-c", "standalone.xml", "-b", "0.0.0.0", "-bmanagement", "0.0.0.0" , "--debug"]

I can connect to this server from the server adapter in Run mode but not in debug mode: the Debug view remains empty and the breakpoints are not hit.
On the other side, I can connect using the plain Java remote debugger (in the launchers) and the same breakpoints are hit.