Board Thread:General Discussion/@comment-25952539-20160429084124/@comment-25952539-20160430135756

Mismatched tags can and definitely DO cause problems! It's true that the software makes an attempt to account for them but sometimes (especially with Div tags and the like) it just gives up and the page is entirely broken. Community Central Chat sees lots of people with such problems.

I dispute that it would be "buried under many pages". Two pages that could directly link to it are Help:Main page and Help:Main page column tags. At the very least, I think that the issue of mismatched tags ought to be mentioned on either of those pages.