Intellisense behaviour of functions and parameters

Some odd/unintuitive Intellisense behaviour:

/**
 * Function description A
 * @param name Parameter description A
 */
function uniqueName(name: string): string {
}

export const Uid = {
    /**
     * Function description B
     * @param name Parameter description B
     */
    uniqueName
};

The intellisense description for the 'Uid.uniqueName' property is now description B, however the intellisense for the parameter is description A. There isn't anything overriding here - the description of the function is always taken from the export, and the parameter description is always taken from the function definition. As such, I need to do the following to get full intellisense support for this pattern:

/**
 * @param name Parameter description
 */
function uniqueName(name: string): string {
}

export const Uid = {
    /**
     * Function description
     */
    uniqueName
};

i.e. function definitions in one place, parameter definitions in another place. I know I can work around this by restructuring the code, but it still feels like I should be able to achieve it in the above format.

No source file or test is named. Reproduce the TypeScript IntelliSense examples in the issue and trace how the exported property and function parameter documentation are selected; done means the documented function description and parameter description both come from the expected declarations without restructuring the code.