Note that there are two different versions of this new monkey seat. One has straight edges and is closed off at the rear. The other has scalloped uprights, and is open at rear. Further, the revised monkey seat (both versions) uses ducted air from the engine cover, whilst when running the original monkey seat, there is no outlet from the engine cover.
so, it may be just experimenting with normal flow from the engine cover, maybe trying to divert engine air to the underside of the rear wing?