Wow!
But this actually matches with the QA Problem (@Sara for the dev thread)
“Yes we testet it, of course, we also run this version in a hand full of Production Environments we have access too”
Good that we have this amazing, and obviously hetorogen production environments for testing, cant imagine how much higher the number of bugs would be without them 
(right now around 550! 
bug/sec fixes with p19)
Does it also imply that you dont check your tickets and feedback emails regarding desicions this?
As I’m 100% sure you will find some mentioning about it and not only from one customer
Not a partner, but with more then a couple of dozens of customers and some of the biggest companys in our country, nobody asked us as well 
But this is really alarming if its the same case like QA. Ask a couple of Partners and Customers and if they dont have a case, thats it, especially if you know the number of usecases are limited due to incomplete implementation, as @gk998 mentioned as well