From The Wrap: Bruce Lee’s daughter, Shannon Lee, says it was "disheartening" to see Quentin Tarantino depict her father in Once Upon a Time... in Hollywood as "an arrogant a–hole who was full of hot air."
In the film, (spoilers follow), Brad Pitt's stuntman character, Cliff Booth, trades cocky insults with Bruce Lee (Mike Moh), and the two agree to an informal, best two-out-of-three rounds fight on the set of The Green Hornet TV show. Lee easily knocks Booth down in the first round, but in the second, Booth slams Lee into a car, stunning him. The fight is interrupted before the third round.
Shannon Lee said it's disheartening to see her father portrayed as an arrogant blowhard, because in truth, as an Asian-American in 1960s Hollywood, he had to work much harder to succeed than Booth and Rick Dalton (Leonardo Dicaprio), the fictional, white protagonists of the film.
More here: Bruce Lee’s Daughter Saddened by 'Mockery' in 'Once Upon a Time... in Hollywood'