Under a specific failure condition, normal recovery could fail to guarantee full atomicity. This will be addressed in an errata. In the meantime, the journal contains a sufficient record to avoid data loss following manual correction by the Red Hat team.
https://engineering.redhat.com/docbot/en-US/Red_Hat_Enterprise_MRG/1.0/html/MRG_Release_Notes/sect-MRG_Release_Notes-Known_Issues-RHM_Known_Issues.html