Image shortcodes width functionality isn't working

[cjosephson]

On the capital.md page, the width property of images seems to be ignored. For example,

{{< figure src="/img/house.jpg" width="100" >}}

produces an image of arbitrary width. The width specifier works within rawhtml though:

{{< rawhtml >}}
<div style="text-align:center">
<img  src="/img/house.jpg" style="display: inline-block; vertical-align:middle" width="444">
</div>
{{< /rawhtml >}}

I found this resource (source code) seeming to suggest that the top option should work.