command line:

cutechess-cli -openings file=suite.pgn plies=16 policy=round -pgnout out.pgn -games 2 -rounds 1 -repeat -concurrency 11 -each tc=10+0.1 proto=uci -engine conf="keele 0.12" -engine conf="keele 0.12e" -engine conf="keele 0.11" -engine conf="keele 0.10"

I have (say) four opponents and for openings I am using: -openings file=suite.pgn policy=round alongside -rounds 1 in a round-robin. My understanding was that with policy=round, all games in a round would use the same opening? I have tried various combinations of -rounds, -games, -repeat, but to no avail. What am I doing wrong? From the 12 games generated, I am seeing 3 unique openings when I expected only 1.

This works fine with gauntlet, but not at all with round-robin.

version 1.2.0