"Celebrating the 50th Anniversary of Hip Hop tonight and forgetting to include Gangsta Boo in the memorial video is disrespectful," tweeted one viewer.
The two pop stars dated in 2012 and 2013.
The duo's performance of their hit song featured fire, red-leather costumes and devilish horns.
Beyoncé's fourth loss in four tries in the album of the year category again overshadows not only the rest of her Grammys, but the entirety of Music's Biggest Night.
See where Bad Bunny, Brandi Carlile, Harry Styles and more landed in our tally.
For the second time in three years, no artist won in more than one Big Four category.
Best behind-the-scenes moments from the 65th annual Grammy Awards.
Though Carter was namechecked in the official program, his name was a glaring omission from the broadcast.
Bey fans are likely to be feeling both elation and disappointment.
"Un Verano Sin Ti didn’t get AOTY but it did in the hearts of Latinos," tweeted one person.
