Reading the question and example carefully helped.
Take one, get to the back of the queue and line up again for next.

Good idea: done 👍

Should be explicit that the original array should not be mutated.

I forked it, with the changes made by the Ruby translation, here https://www.codewars.com/kumite/60285974641c7600095725bf?sel=603d12f14acee90022f645f4

"Description cannot be approved, recent changes from the related record must be merged first"

There should be at least one fixed test including 100. My solution passed the random tests (and was therefore successfully submitted) when the random tests did not include 100, but my solution fails whenever the random test includes 100. Therefore, my solution is not correct and should not have been submitted - including 100 in the fixed tests would prevent this.