Another issue I would like to draw attention to is the inconsistent UI in the subwindows showing details of IPv4 and IPv6 routes. A few years ago I even submitted a ticket asking to make changes to WinBox 3, but it was ignored. Sadly, the issue still exists in WinBox 4.
Have a look at two active dynamic connected routes I opened in 4.1rc3 and let's play "spot the difference" together:
1a. IPv4 has a Status tab, while IPv6 doesn't.
1b. If imported from BGP, there is a BGP tab for IPv4 only.
2. 0.0.0.0/64 looks weird since (a) IPv4 is limited to 32, (b) 0.0.0.0 is inapplicable to IPv6.
3a. Immediate Gateway is the 3rd row in IPv4 and the 4th row in IPv6 (in the 2nd visual block).
3b. Pref. Source is the 3rd row of the 2nd block in IPv6 and the 3rd row of the 5th block in IPv4.
4. Local Address is missing for IPv6.
5. Blackhole is in the 3rd block in IPv6 and the 6th block in IPv4.
6. The block separator after Target Scope is present in IPv4 and absent in IPv6.
7a. MTU is missing for IPv4.
7b. Hoplimit/TTL is missing for IPv4.
It would be great if the UI RouterOS team could make an effort and ensure routes look consistent between the address families.