When one writes the following Markdown:
The Markdown is rendered as a link in the preview (underneath the edit-textarea), but when one views the question on the page, it is rendered like the Markdown source code.
It is however rather strange, the two versions interpret the Markdown slightly different.
Of course this is a minor "bug", but as always: it is nice if the preview and the page render the same result, this saves users editing the page multiple times. Even if it only saves a second, with
1M+ users, it will save a few years of working time eventually.
(hit  to compare both versions)