I also noticed this behavior, even if it is not ideal, the more important thing is, that it is not consistent, so reusing existing views, even if F5 is pressed in the browser works in single-view environments, but not if concurrentDOMViews is turned on.
Depending on the requirements, both behaviors could make sense, some users are expecting to freshly start over, if they hit F5, others just want to make sure the page is re-rendered, but with the existing data.
Anyway, I have a solution for that to support both behaviors on top of the ICEfaces extended request scope. So if anyone is interested in additional scopes than just the JSF basic scopes like application, session and request, let me know, I could post them here as a preview since it is a component of the edoras framework which will be republished under the Modzilla Public License by March first.
It supports additional scopes like "view" and "window", a conversation and even persistent scope are in development.