I just found an issue with mobile links with the new Gamertags. The numbers are not being added to the URL when clicking on a forum post author. This occurred on Safari, on an iPhone.
I was reading
this post. I noticed, based on
this reply that Ant has the new GT type.
Curious to see how his home page would appear, I "clicked" on Ant in the original post. I was taken to
Antwhich just comes up as a blank page. In the reply, clicking on Ant#2827 did take me to the correct
AntThe link worked correctly if I switched to Desktop mode.