fanduel graded tennis set handicap wrong after retirement rule kicked in.

Had a weird one last night with the tennis set handicap markets. Placed a bet where the dog only needed to grab a set, but the match ended after a retirement. I was under the impression most books void these when the retirement rule applies and the full set isn’t completed. This time, the bet got graded as a loss, and it’s throwing me off. I double-checked the rules page and it just left me more confused.

Anyone else run into this with tennis bets? Feels like the grading is inconsistent between different matches or maybe I’m missing some nuance in the way these set handicaps get settled when retirements happen. What’s your experience with how these should be handled?