Why doesn’t the Canvas API support the Lucida Console font?

According to an answer in a previous question the Canvas API “allows use of any font that can otherwise be used by the user agent with a CSS stylesheet” yet while I can normally use Lucida Console in my browser it fails to load in Canvas.

Here is the font assignment that fails:

ctx.font = '15px Lucida Console, Comic Sans MS';

It has no trouble loading Comic Sans.

Or you can look at the whole example here: https://jsfiddle.net/zt6m1qeg/1/