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Note that the setup was not changed in anyway.
Further, the qualifying time was 0.5 & 0.8s slower for both, compared to practice laps for the same tire in same weather conditions. However, this might just be a circumstantial change affecting all participants, since the gaps were largely same as in practice, and also, race pace didn't seem to be slow compared to others.
In any case, it's a display bug at the very least.
Not that it matters too much, but still...