It comes after Mango TV censored Ireland's entry in the first semi-final.
It's thought this related to the depiction of a same-sex couple on stage during Ryan O'Shaughnessy's song 'Together'.
O'Shaughnessy performs in the first semi-final with his dancers (right) | Image: YouTube/Eurovision Song Contest
The channel was also criticised on social media for apparently blurring rainbow Pride flags from the broadcast.
It also censored Albania's entry, reportedly due to the fact that tattoos were featured in the performance.
In a statement, the EBU said censorship is not in line with its values of universality and inclusivity.