It's been reported the 48-year-old, who plays Kat Slater, has been written out of the soap on a temporary basis until she is allowed to return.
The Mirror reports after the alleged "incident" happened, an emergency meeting was called by the show's producers, where Jessie was apparently told she'd be suspended for two months.
A source told the publication, "Bosses were left with no choice but to discipline her.
"During the meeting she was told to sort herself out before returning to work.
“Scriptwriters are currently coming up with a storyline to explain Kat’s temporary exit from Walford.”
EastEnders spoilers: Monday 27 – Friday 31 January 2020
Leo King is pushed off a balcony
The week begins with Leo causing trouble on the market. After he spots Kat Moon and hurls abuse at her, she responds by exploding at him and ripping his stall to pieces.
The news of the suspension comes just weeks after Jessie allegedly ended her two year relationship with boyfriend Paul Keepin.
Jessie is said to have called it quits over the New Year, with a source telling The Sun, “Jessie and Paul recently ended things and have cut contact with each other.
"She is moving on and wants the New Year to be a fresh start when she will focus on work."
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“After a quiet Christmas with her daughter and her closest friends, she is knuckling down for 2020.”
Jessie first joined the BBC One soap in 2000. She was quick to establish her place within the Square, becoming one of the most famous soap characters of all time.
She left in 2005, reprised her role five years later in 2010, before leaving again in 2015 and returning in 2018.
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