It was noted in the test realms that a summoning stone problem was to be fixed... and they did.. Problem is, we can still bypass level requirements!
Before patch 2.2 it was a simple press f2-f5 to switch party members before the portal opens... It is still this way but the timing requires much more accuracy...
Now it says "Target does not meet level requirements" when you try to casually switch over.... or it just works on the person first selected..
You must switch targets barely after you click.. Don't know if this will help anyone but there is my 2 cents..