Process does not trigger on Update event on PersonInOrg

I tried making a custom process that triggers on INSERT on PersonInOrg table. I've checked the "Assign by event" flag and tried using both an empty generating condition and "Value = True" condition. 

The process is never triggered no matter what I try. When I add users to any business role there are no processes in Job queue.

I've also tried importing a process from a collegue. On his environment it work, but when it's imported into my environment it does not trigger.

I'm using version 8.1