By Rose Hill Tensions are said to be mounting at Eurovision, with journalists reporting from the event in Malmo, Sweden, noting the uncomfortable atmosphere around the stadium and silence from Eurovision Broadcasting Union (EBU). Earlier this afternoon, EBU bosses cancelled a media conference last minute, which had featured the UK’s Olly Alexander and other acts who did not need to compete in the semi-finals. The only reason given was that all the artists – Olly alongside Italy’s Angelina Mango, Spain’s Nebulossa, Germany’s Isaak and France’s Slimane – wished to focus on rehearsals. It came af…