An upgrade to the log manager will be required to resolve WFCORE-1585. An enhancement was made as part of LOGMGR-147 to allow child handlers to not be closed when the parent handler is closed.
Logging handler lost due to conflict handlers in logging.properties and standalone.xml
Upgrade jboss-logmanager from 2.0.5.Final to 2.0.6.Final
(7.0.z) Upgrade jboss-logmanager from 2.0.3.Final to 2.0.7.Final