The time statistic in stage comparisons is adding the difference between the two runs when it should be subtracting (and I suspect vice versa too). See the blue markups in my images.
#Stage comparison 'time' statistic is not mathing
twilit idol
Just to be super clear. "Base run" appears to be the run that was just performed, while comparison is your PB by default (other stats like jumps & ticks confirm this, see second image)
See the first image. If I complete stage 1 in 7.50, but I am +0.01 (meaning, slower than my pb by 0.01 seconds), then comparison should obviously display 7.49 and not 7.51.