Q:

Markdown formatting of tag wiki excerpts in /review

Tag wiki excerpts are plain text. The description when editing tag wikis states:

The tag wiki excerpt is a brief plain text introduction to the topic that the tag represents. It is shown at the top of tag question lists, and as a tooltip wherever the tag appears. Complete this first!

Emphasis mine
This means that Markdown does not work there:

Unfortunately, for users on /review, it is rendered as Markdown, and therefore can easily be approved although clearly attempting to use unsupported formatting (see bold text on the left):

Tag wiki excerpts in /review should not render Markdown, as it will just lead to fancy formatting in tag wiki excerpts by users used to using Markdown, that are then approved by higher-rep users without them being able to see that excerpts aren't actually formatted.

A:

Indeed we shouldn't be giving you an option on those post types.  Starting with the next build, we'll remove the markdown-processed view button and show only the raw-text diff for tag wiki excerpts.  
Thanks for the report!

