"#" in URL converts to %23

There are several URL's I am using in iBooks Author that have an anchor to a certain spot on a webpage.
An example of one is:
When I click on the link on the actual iPad, it takes me a page in Safari where it has replaced my # with a %23, rendering the content unusable.
Can I just not link to anchored areas on pages?  Is there a workaround?
Any help is much appreciated!


Have you tried encoding as both 23 & 25?