> Study finds that when there's a time limit, even a rational judge would try the case faster, and there would be a tendency towards unfavorable ruling.

This study does not say this.

The simulated rational judges are "ideal" and their decisions are not influenced by the ordering of the cases or how long it has been since a break.

The study is saying that despite this perfect behavior, some simulated methods for choosing when to take a break will cause favorable cases to be more likely to be scheduled at the beginning of a session (in their last simulation, this effect only appears after applying the same statistical processing as the original study).