NotSerializableException when using clustered authentication cache

After migrating from wildfly 10 to wildfly 11 I have troubles using a distributed authentication cache. I get serialization errors in the JBossCachedAuthenticationManager$DomainInfo class. See forum link for whole discussion and stacktrace.

From the exception it looks like that the DomainInfo object will be put into the cache although it has a member which is not serializable: protected ClassLoader contextClassLoader.