If that is a C150 with an O-200 then carb ice doesn't surprise me. I was taught "carb heat off after landing". A Group member had been taught "carb heat off on short final, ready for go-around".
I tried it. Fortunately a full-stop landing. The engine spluttered when I opened the throttle to do a 180.
I often start the take-off run with carb heat hot. I've had vapour lock with mogas. Confirmed by opening the gascolator drain - froth came out.
( O-200 carb ice experience in Jodel DR1050 and Bolkow 208C.)