Visual Studio intellisense from Typescript jsdoc is not working with fat arrow functions

Typescript intellisense works fine for this:

class SampleClass {
    /**
     * Does stuff
     *
     * @param blah stuff needing done 
     */
    public doStuff(blah: string) {
    }
}

var sample = new SampleClass();
// intellisense works correctly and shows parameter description:
sample.doStuff("hello"); 

However switching to use the fat arrow seems to break the jsdoc intellisense (the method signature still appears, but none of the jsdoc descriptions do):

class SampleClass2 {
    /**
     * Does stuff
     *
     * @param blah stuff needing done 
     */
    public doStuff = (blah: string) => {
    }
}

var sample2 = new SampleClass2();
// intellisense gives the method signature still but no longer picks up any of the jsdoc descriptions:
sample2.doStuff("hello"); 

I'm using Visual Studio 2012 Update 4; TypeScript 0.9.5.

Is this a bug, or do I need to use a different syntax for the jsdoc comments?