In the statistic section of an activity all 'Tempo/speed data' (average, average moved and best) are the same. This is a software failure.
same here.
Best pace indeed is broken, shows copy of avg.
But avg and avg moving fields seem fine.
but top speed is correct if you go to edit ...
Yes, best pace is broken on opened full activity page on Stats tab,
but it's correct on Edit mode and on Activities list and Splits tab.