The QueryPlannerParams contains a CollectionInfo object which stores index information. The IndexEntry class stores some pointers taken from the IndexCatalogEntry class.

If that IndexCatalogEntry is invalidated (likely due to a refreshEntry call) then these pointers will become invalid once the last reference to this shared state is released. This means that if there is a yield in the query which is using these QueryPlannerParams, the IndexCatalogEntry could be destroyed and some of the IndexEntry will become invalid.