IntelliJ IDEA Scala bug example: plugin does not propagate @throws annotation

Derived.java

package com.tomergabel.examples;

/**
 * Created by tomer on 7/10/12.
 */
public class Derived implements Superclass {
    public void doSomething() throws Exception {
    }
}

Superclass.scala

package com.tomergabel.examples

/**
 * Created by tomer on 7/10/12.
 */

trait Superclass {
    @throws( classOf[ Exception ] ) def doSomething()
}