There is duplicated release note - bz#1084612 "All methods in ClientSessionImpl which implement XAResource can potentially throw a non-XAException to the TM" in chapter "Bug Fixes". It's duplicate of bz#1088606 which is already there.
Modified Bug 1084612: Removed release note text and set requires_doc_text to minus.
Can be verified here: http://documentation-devel.engineering.redhat.com/site/documentation/en-US/JBoss_Enterprise_Application_Platform/6.2/html/6.2.3_Release_Notes/index.html JBoss_Enterprise_Application_Platform-6.2.3_Release_Notes-6.2-web-en-US-6.2.3-3.el6
Verified with EAP 6.2.3.CP.CR3. Thanks!