Inconsistent sorting

The ordering of the list should always be the same for the same seed. Right now the list is sorted starting from the current state each time the seed is updated, which leeds to inconsistent sorting.

A possible fix would be to always sort the list from a static start point.

Start by tracing the seed-update flow and the code that sorts the list from the current state. Reproduce the issue by updating the same seed repeatedly, then verify that each update produces the same ordering for that seed.

Written by the indexing model from the issue text.