The clan were said to be enjoying the movie, laughing, clapping, and leaning forward in their seats.
However, within minutes of the film ending, the mood in the room reportedly turned as Janet allegedly began tearing it apart.
Michael Jackson (far right) in The Jackson Five in 1972. Photo / Supplied
“She had something negative about almost every scene,“ one source said.
“The acting, the makeup, how the actors spoke, even how they walked.
“It was Janet deciding against the room that this movie wasn’t going to meet her approval.”
Page Six reported Jermaine stood up and chastised her.
“You are going to miss this wave,” he said, adding: “You are so jealous, just get on the wave.”
Family members were reportedly startled by the exchange, particularly younger family members who hadn’t witnessed open arguments between the adults previously.
Paris Jackson is locked in a legal dispute with her father Michael Jackson’s estate. Photo / Taylor Hill, FilmMagic
According to Page Six, Janet has been an outspoken supporter of Michael’s daughter, Paris Jackson, 27, who is locked in a legal dispute with her father’s estate.
The feud is understood to have worsened divisions within the family over how the late King of Pop’s estate has been handled.
Paris accused executors John Branca and John McClain, who are producers on the biopic, of acting in their own interests, and wasting resources on legal fees and risky investments.
Family insiders told Page Six that Jermaine believed the film would offer the family their biggest opportunity to reconnect with fans since Michael’s death in 2009.
The outlet reported he also has the support of many of the Jackson family who were involved in the film at multiple levels.
“Everybody in that room knows that Michael was lightning in a bottle,” a source said.
“You can’t recreate him. But you can remind the world what he meant.”
One family member at the screening reportedly announced: “This isn’t just about Michael. It’s about us.
“We keep looking for that moment again, [but] only Michael can give us that, and he’s not even with us anymore.
“It’s about our legacy. It’s about the comeback in store for all of us.”