The Eurovision song contest continued to spawn unprecedented controversy, days after the winner was crowned, with the 27-nation European Union lambasting organizers for their "incoherence" in banning its flag from the concert hall during the final.

In an unusually sharp letter, EU Commission Vice President Margaritis Schinas wrote to the organizer, the Swiss-based European Broadcast Union, that its ban contributes to "discrediting a symbol that brings together all Europeans."