Some users might want to set Roar popups to stay indefinitely, so they are only removed when a user dismisses them. Currently one can set a duration time to some very high number like 10000000 ms. But it would be easier just to use 0 for this (like with the maximum popups field).
Wolf has provided a patch. Awaiting approval on git.
Merged by Konstantin (3d6fc9733a161ceef34ee6dabfd7d26a5df5094d)