When I insert an image into a post and give it a caption, WordPress generates a shortcode that looks like this:
[caption id="attachment_55" align="alignleft" width="127" caption="Here is my caption"]<img class="size-full wp-image-55 " title="my image title" src="my-url/my-image.jpg" alt="my caption text" width="127" height="163" />[/caption]
Unfortunately, WordPress is not parsing the shortcode into HTML so the shortcode gets stuck as-is in the HTML. I'm not using any plug-ins so I don't think it is a plug-in incompatibility.
Does anyone have any ideas on this?