We've been doing quite a bit of testing with ROSv7 for our clients that use MikroTik and want to upgrade and test but aren't sure what issues will come up. There have been several changes either in the default behavior or syntax between ROSv6 and ROSv7 and thought it might be a good idea to create a thread to begin summarizing them in one place.
One that I've come across recently is the change in scope behavior for recursive routes which is mentioned here:
viewtopic.php?t=173227#p888075
If you use routing recursion which is common in iBGP, the recursive routes will flap and be invalid/unreachable until the scope for the route is raised to be higher than the resolving gateway.