Blocks/Depends on link is ignored in the roadmap view

have a „Depends On“ link between two work items. The work items has different owner. When I display the work items in the roadmap vie of the plan, they start at the same time.
I would expect that the work item that depends on the other work item cannot start earlier than the other work item is finished. Is this a bug in the roadmap view or must I change the process configuration? (I use the scrum template)
Hi,
3 answers

I believe this is because IBM says that Depend on and Blocks are 'advisory' links, and not functional.
ie out of the box a 'depends on', does not prevent a workitem from resolving even tho the words say otherwise.
We have implemented a process advisor extension, source shared here on jazz.net, to enforce this behavior
not that this is a solution, but if you make these children instead does the diagram draw correctly and calculate time properly?
Sam
ie out of the box a 'depends on', does not prevent a workitem from resolving even tho the words say otherwise.
We have implemented a process advisor extension, source shared here on jazz.net, to enforce this behavior
not that this is a solution, but if you make these children instead does the diagram draw correctly and calculate time properly?
Sam

see the source here on post 2
https://jazz.net/forum/questions/64268/operation-advisor-custom-precondition-for-work-items
https://jazz.net/forum/questions/64268/operation-advisor-custom-precondition-for-work-items

@Sam. Thanks for the answer. But do I have to extend the RTC Server, or is there also a functional link between two work items that I can user for that behavior?