anchor linking with # not working in html5mode

Create an HTML page where the URL is different then the base

current URL: http://localhost:8000/build/docs/some/path

```
<base href="http://localhost:8000/build/docs/">
```

crate a link

```
<a href="#someId">go there</a>

<div id="someId">
```

when clicked the browser goes to 
http://localhost:8000/build/docs#someId
instead to:
http://localhost:8000/build/docs/some/path#someId
