Do-While loop breaks despite not fulfilling conditions

This is probably a simple fix but when I run the loop below r1 and r2 sometimes don't fulfill the conditions to break the loop but the loop still breaks and returns the values. For example the loop breaks even if Math.abs(r1-r2)<3

  let r1
  let r2
  do{
    r1 = Math.round(Math.random()*(elementsToSwap.length-1))
    r2 = Math.round(Math.random()*(elementsToSwap.length-1))
  }while(
    (Math.abs(r1-r2)<3)
    &&prev.includes(r1)
    &&prev.includes(r2)
  )

What am I doing wrong?

elementsToSwap and prev are both arrays.