The <br> tag is ignored by the markdown parser

Summary
The
html tag is ignored by the markdown parser (tested in the wiki and issues).

Steps to reproduce
See https://gitlab.com/siancu/testwiki/wikis/home for an example of this behavior. Check the source of that page.
Also here is an issue that shows this problem.

Expected behavior
The
tag should be correctly parsed and a new line should be inserted.

Possible fixes
If you could point me to the component that's responsible with the parsing of markdown, I could attempt a fix. Does GitLab use redcarpet or something else for markdown parsing?