Blank template have an empty VM-Init Database entry. All new VMs that have no template are getting vm_init empty entry as well which can lead to unnecessary VM-Init trigger on VMs first run.
This is an automated message: This bug should be fixed in oVirt 3.5.1 RC1, moving to QA
oVirt 3.5.1 has been released. If problems still persist, please make note of it in this bug report.