OS Sierra

My DB are working like a charm with El capitan no problems at all
Its seems there are still some issues with Sierra (pdf kit etc …)
So I am reluctant to update to Sierra now I am waiting for all issues to be solved

Q : Any idea when will that happened ?


No. There a plenty of buggy things in Sierra, and no guarantee Apple will address them all. We are doing our best to resolve and workaround what we can.