The following 2 code situations each cause the editor to incorrectly give the hint "Missing @throws tag for E"

Situation A

public class A {

    /**
     *
     * @param <E>
     * @throws E
     */
    public <E extends Exception> void method() throws E {

    }
}

Situation B

public class B<E extends Exception> {

    /**
     *
     * @throws E
     */
    public void method() throws E {

    }
}

As you can see, it clearly isn't missing. 

Clicking the hint to add a throws tag results in a duplicate entry in the javadoc.