And you raise again a 2016 topic for that?
you also ask it on 2020,
http://forum.mikrotik.com/t/hide-webfig-ssh-ip-logo-dont-show-ip-address/145682/4
Your request is perfectly useless.
Do you understand than everyone can ping your domain an give the IP back?
The IP on telnet is the IP of the device itself, not “your”, and if you can see this, it’s also on your browser address bar…
Hide that is absolutely useless, because everyone can se your webfig login page, can translate domain on browser address bar to ip.