Trffic on the roundabout has to stop to allow traffic to enter the roundabout.
Does that make sense?
No it does not. Never heard of that. And I’ve had plenty of experience with British and Irish roundabouts. My next question would be to ask about the sanity and political affiliation of the people who establish those sorts of traffic laws.
Stop in a roundabout and somebody will drive right over you.
Traffic ENTERING the roundabout must yield to traffic IN the roundabout.