It depends on your PO really. My ex was on probation and I called the cops on him for taking my car. He got arrested for unauthorized use and then he broke a window in jail that night so criminal mischief. He was already out on bail for a felony robbery charge.
They did file to revoke his probation on the felony and he was in jail for two weeks but then they decided to wait and see what happened with the robbery case before revoking it. A year later, he made a plea deal and they ended his probation when his 2 years was up in April. Waived his fines/fees too. So it honestly just depends on who you're dealing with.