Steps to Reproduce:
Expected: Event Enabled flag should remain checked.
Actual: The Event Enabled flag gets unchecked.
This happen very subtlety and the impact is that it disables the auto-start for all CIT processes.
The "Event Enabled" flag goes to read-only so you are not able to check this flag again.
Clarity PPM 15.x
This is caused by Defect DE54000
This Defect is solved as from 15.8.1