It seems like the new premium Mosquito was assigned the wrong crew model/unit type.
The crew members for the Mosquito are using British Tanker icon + models rather than British Pilot models.
Screenshots showing the incorrect British Tanker icon + models used for the Mosquito crew:
Screenshots showing the British Pilot icon + model used for other British planes:
Screenshot showing the British Tanker icon + model used on a British tank crew (notice the soldier icons + unit model is the same as those used on the Mosquito):