Issue Summary

Enabling Embedded HTML in markdown in Labs caused [TOS] not to render.

Steps to Reproduce

1. Enable Enabling Embedded HTML in markdown in Labs
2. Create Readme.md or Wiki with the following test:

   [TOC]
   
   # Header 1
   
   ## Header 2
   

Expected Results

The [TOS] render as expected

Actual Results

[TOS] markdown is not rendered.

Workaround

Disable Embedded HTML in markdown in Labs and edit Readme.md or wiki then saving it will render the [TOS].