Board Thread:Support Requests - Getting Technical/@comment-31668539-20170820232812/@comment-32354545-20170821001956

Well, see...

Older versions of HTML would have  tags be perfectly valid HTML, but that's deprecated, you're not supposed to do it. Still, Mediawiki software, like I've said elsewhere, does its best to account for users' somewhat sloppy tag closures, and will actually convert them into the  tag that is supposed to be used in their place.

Check out this line on your main page:

If you are new to the wiki, please check out the Wiki Rules.

In the actual page source, this has been converted to:

Correcting the syntax of the linebreak tag. is a Wikia specific, proprietary tag not designed by the Mediawiki guys, and I guess it hasn't been made so failsafe as the linebreak tag.

I wouldn't worry about the improper linebreak tags. It won't break anything.