markdown parsing issues while using <div> tags in new post submission

Expected behavior

I wrote a new post in the internal editor of the site. I used <div> element for styling (like <div class="pull-left">. When I wrote markdown code right after the <div> opening tag (or even the closing tag) I expect to see the parsed HTML code beneath in the preview cube.

Actual behavior

The markdown didn't parse. The code appeared just like I wrote it.

How to reproduce

1. Get in post submission page.
2. Write some markdown code (like # Header1)
3. Wrap it with <div> tag, when there is no empty line between your code and the tag.
4. You can also try write markdown after the closing tag. The bug appears there also.

Additional information

I found a hint about why it happened. Once I put an empty line between the tag and the code, it works as expected.

• Browser: Microsoft Edge 40.15063.674.0
• Operating system: Microsoft Windows 10 Home