S4B Mac ADFS failing

So I managed to dig deeper on this - I'm not a massive traffic analyzer but I was able to see where things seem to be failing.  That same page that loads out as spinning or blank on the internal network paints as the ADFS external login page when off the network.  So I set up a trace to watch Skype as it's attempting to log in on the internal network and it's the ADFS response to the internal auth request. 

I updated all the way to the latest fast insider build of Office/Skype this morning and it's the same thing.  Something within Skype isn't handling that ADFS response in the last few builds.  My guess at this point is that I have to open a premier ticket - anyone else seeing this issue at all?