IF you have already built workshop(s) of a type, and queue another workshop of that type, then the dfhack suspendmanager(?) info may "leak" into the display of the already built ones.
Example - New Kitchen under construction:
Examining a *different already built kitchen, which just happens to have no running jobs (happens to every kitchen who is not currently running a job):
Examining a different already built kitchen which has a job running:
So it appears that for same type workshops where current jobs do not block the place the suspendmanager info would take, the (last?) info from a queued building is erroneously displayed.