Dear Mikrotik,
we are using Radius Auth for mikrotik login management. Sadly, since webfig exist, we have mentioned many times, this is NOT working with webfig, BUT EVERY OTHER method = yes!
(that means, ftp,telnet,ssh,winbox supported, webfig even NOT do radius auth)
Can we expect to do this, or should we forgot to use webfig?
Thanks for your productive answer!
It is planned
Hi Normis, maybe you have ETA for that? 
bump??? what version is this broke in?
littlebit: broken??? never worked! (since webfig introduced, it does not supports radius based auth - even not do radius request)
sorry, there is no ETA for this feature. However, as normis noted - it is planned and some day we will introduce it.
should note, that this is currently is not one of our priorities, so it might take some while. If you are planning system now, better do not rely on this become available soon.