Hope you didn't pay for that boot liner?!! I always agree on a price and then say "oh wait, I need a boot liner" and they're like "yeah that'll be £___". So of course I just say "screw that then, I'll go elsewhere". Works every, single, time!!
Hmm can't remember seeing my IS ones move on startup at night either hmm.
I think you may have a faulty sensor for the auto wipers