Just found out that my windscreen wiper goes down 95% of the way and not 100% when the auto-wiper is "engaged" or "standby" mode. Then when it does not detect rain, it will go down 100% in the resting position. Bit bizarre, didn't realise it until raining recently here in Australia. 

The 95% down is about 2-3cm above the normal resting position.

Can someone confirm that is normal behaviour?

Mine does the same, regular sight in the UK as is the rain.

I think it's to do with parking the wipers with the blades sometimes flipped and sometimes flopped, if you see what I mean.  It stops the rubber from getting set in one position and increases the lifespan of the blades.

Yeah, sounds normal to me.

Yes normal behavior, as mentioned above there is a zone the wipers park in which stops blades from getting stuck in one position.

It's a feature to save the windscreen motor. It was brought up a couple of years ago on here when someone asked about the Mk2 Superb. Apparently the wipers will come to rest in one of three positions every four cycles.