Missing 960 starting position?

With generally over 100 games in the database for each position, it seems statistically implausible that there should be no games at all for a given position. Yet for the position
rknnqbbr
there are no games. Is the software somehow excluding some legal positions from their due random chance of occurring?

lichess.org/analysis/chess960/rknnqbbr/pppppppp/8/8/8/8/PPPPPPPP/RKNNQBBR_w_KQkq_-_0_1
The games come up for me.