At present, both LogManager#doConfigure and org.jboss.logmanager.configuration.PropertyLogContextConfigurator#configure improperly use ServiceLoader#load(Class), which uses the TCCL. Since the log manager can be initialized from any thread, and possibly quite early, this causes indeterminate results such as duplicated logging and other problems.

See also:

• https://github.com/elastic/apm-agent-java/issues/3563
• https://github.com/quarkusio/quarkus/issues/40009