Where: Hourly game Race challenge.
Expectation: To see the ring all the time without any problem.
Reality: In certain angle, the ring are literally blind to visibility.

Cause: The VFX "Bloom" under Setting -> Graphic -> [x] Bloom is making a brightness effect making the ring basically invisible.
This VFX was added in the QoL update.

See video: https://youtu.be/BMuOB9jLSsA

IGN: NintendoBest