Traditionally one's be able to use
*word* to italicize the word, or
And normally using
**word** would bold the word.
These don't seem to be working. This should be bold. This should be italic.
The MCE buttons on the input don't work either (they merely add the same, non-working, shortcuts).
Should the headings be bold as well? I can't remember. They work for size.
Main site test (Deleted answer)
Lists and the shortcut for them seem to still function.
This site uses OpenSans from Google Webfonts. If you also have OpenSans installed on your system locally, there may be a conflict. Disabling your local version and relaunching the browser might allow the various faces to once again appear to you.