When searching on issues and filter on users (reporter, assignee etc.) external/portal-only customers also show up on the list. This is quite annoying if you are a big company and doesn't know all the names of your colleagues. Then you can't differ between customers and colleagues.
DO anyone knows how to fix that, so we only see internal users. It's OK if I have to choose project first, before the system knows to exclude external/portal only customers from the result.