We noticed an anomaly in paged results while testing against 3.0.0-alpha1. It seems that unbounded selects can return rows repeated at page boundaries. Furthermore, the number of repeated rows seems to dither in count across consecutive runs of the same query.
Does not reproduce on 2.2.0 and earlier.
I also noted that this behavior only manifests on multi-node clusters.
The attached script shows this behavior when run against 3.0.0-alpha1.