When creating a Rule to pin specific records from a query in which some of the hits are reranked by Dynamic Re-Ranking (DRR), some non-reranked hits may be shifted above the pinned item.
This can occur both when the pinned item has been re-ranked and when it’s a non-reranked hit.
The behavior can be observed in the visual editor while creating the rule as well as when performing the given query after the rule has been activated.
This has been identified as a known limitation of Dynamic Re-Ranking.