Men's Range Trail Shorts

Different size between colors of the same size shorts. I have Midnight Navy color of the same short. Like the fit/function for MTB rides(wearing bibs under shorts). Fit well. Both shorts are size (S). Dark Grey pair is too small to wear with cycling bibs. This is the second time I have run into inconsistency with size between colors of the same shirt. Had the same issue with the 12 Hour Range Cargo Bib shorts.