A Sydney court on Friday ruled Burgess had intimidated Mitchell Hooke, his ex-wife's father, with the intention of causing physical or mental harm.
Burgess pleaded not guilty to the charge last year, relating to an incident at Mr Hooke's home in 2019.
He was given a conviction and placed on a two-year good behaviour bond.
The court heard competing accounts over the incident, which came as Burgess visited his children after separating from his ex-wife, Phoebe Burgess.
A row escalated after Mr Hooke asked Burgess to leave, the trial was told.