If you open a report there are a ton of posts to https://vortex.data.microsoft.com/collect/v1 which is obviously logging whats going on etc. None of it looks terribly dangerous but our security peeps rather understandably said WTAF! We are using on premise cos we don't put stuff in the cloud and are paranoid about this sort of thing and here you are sending all sorts of stuff cloudwards.
I can't seem to find anywhere obvious where I can turn this off. I assume its a customer feedback/feature usage tracking option I must have enabled when I installed it.