Hi,
I also reported this back in May on my iPad Pro 12.9". But since the ability to view Roon in portrait mode has been fixed (thank you Roon devs), I am no longer aware of the issue.
However, I can still reproduce this on my old iPad Pro 11" - and this has been occurring since the start of last year; it’s a friend’s old device that I bought and he uses Roon also and I know he was experiencing the same issue.
I agree with @dannybgoode, this has been going on way before 571 was released.
Point 2 in the below post: