Strange behaviour on volcano circuit

Went on Watopia’s Volcano circuit today to try and get the 5 laps badge. End of 1st lap, lap counter goes to 1 and I get a time. Same 2nd lap but on 3rd and 4th laps, lap counter stays at 2 and no time. On 5th I get a time but lap counter stays at 2. No badge. Very odd behaviour. Am I missing something? I know you don’t get a badge until you complete the course but I thought I had.