I’ve both Mini 4 and 5 Pro’s and fly them with an RC2. Neither of them move backwards after takeoff, either on the button (when hand launching) or when controlling motor start and takeoff with the sticks. This mirrors the behaviour of my other...
Currently, post 1 Jan 2026, I believe EU and UK class marks are aligned. What happens after the end of 2027 is unknown.
I’ve no idea on eu airspace regulations so won’t comment.