I guess the logmsg field should be the short title of an event, correct?
If so, there are a some events in opennms.events.xml which aren't configured correctly.
For example nodeLostService. There is the parm[eventReason] in logmsg which can blow up you "title".
Postgres outage identified on interface 10.10.7.48 with reason code: JDBC service is not responding on: NODE, 08001, org.postgresql.util.PSQLException: Connection to NODE:5004 refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connection.
I looked at some other events and noticed, that often the descr field is filled with more information.
Maybe it makes sense to audit the events in opennms.events.xml.
If you think it is a good idea, I would do this job