I believe what you describe is typical for most clutches where the plates and baskets operate immersed in an oil bath (commonly known as wet clutches) and results from the oil drag between the closely fitting plates. The clunk and jerk sometimes felt when first shifting a cold engine into gear may also be due to the plates sticking together a little before getting more oil between them. For this reason, some prefer to squeeze the clutch lever a few times after cranking a cold engine while still in neutral and just before shifting into gear, which may help reduce the initial clunk and jerk. Bike brands using dry clutches (Ducati comes to mind) make a chattering noise from the spinning plates while disengaged -- at least that is my understanding of the reason behind the chatter (music to some). In any event, while on the center stand, in neutral, with engine running, my guess would be that your rear wheel remains still. Just my thoughts on the matter until you receive a better explanation from the true gurus here. Cheers.