We have been having this issue off and on since going to 2.7x
where Events Titles are overwritting other events.
Steps
1. Created a new event in Jevents.
2. Created and sync a new DT Register event to the Jevent.
3. On refresh the title of event that was already there has been renamed to event create in step 2.
The event created in Step2 is also there so it shows twice, and it confusing which one is which and confusing to users.
If we go back and change the title then we lose the event created in step2.