Liverpool fans were unhappy with second-half substitutions as their defence of the FA Cup came to a disappointing end to the hands of Brighton & Hove Albion.
Kaoru Mitoma's stoppage-time strike completed the comeback for Roberto De Zerbi's side after an unmarked Pervis Estupinan lofted the ball towards the six-yard box.
Harvey Elliott slid the Reds in front in the first-half but they were quickly pegged back after Tariq Lamptey's long-range effort deflected off Lewis Dunk to beat Alisson Becker.