When MicrosoftAjax scripts are registered using a bundle, the following exception occurs:
Value is not the name of an existing type. ReferenceError: MVCx is not defined at eval (eval at Type$registerClass (http://localhost:26766/Scripts/Shared/JS/MicrosoftAjax.debug.js:779:27), <anonymous>:1:1) at Function.Type$registerClass [as registerClass])
If these scripts are added directly to the page using the "script" tag, everything works as expected.
I've attached a sample project with a screencast illustrating the problem.