I think there is a bug (or change?) with open external link in the last XDK version.
At first export, I use "Minimum plugin". When we touch a button to open a link, nothing happens.
Then, I tested all plugins in order to know why the link was not opened.
To open a link with C2 function "Browser, Open URL" we must to activate plugin xdk "Device"
But this plugin ask to user " permission Send sms" and many others...
With the older version, we need no permissions (or only Internet permission)... it seems more logic no ?