List of steps to reproduce (step by step, including full links if applicable):

• Find an existing page to edit, or create a new one.
• Create or edit the page to include the wikitext <math>0</math>.

What happens?: The math markup results in empty text.

What should have happened instead?: The math markup results in the digit 0.

Software version (if not a Wikimedia wiki), browser information, screenshots, other information, etc:

https://en.wikipedia.org/w/index.php?title=Wheel_theory&action=edit&section=1
https://en.wikipedia.org/wiki/Wheel_theory#Definition
https://en.wikipedia.org/wiki/Wikipedia_talk:WikiProject_Mathematics#Zero_not_displayed_properly