Coincidentally I had a similar report to this one yesterday. This time from a user with a Windows PC. So it’s not just a Mac thing. It’s any browser that has JavaScript disabled, missing, or broken.
Once can be ignored (“user issue”) but twice needs some action, so I’ve added a warning message explaining the problem, which only users suffering this issue will ever see. It is a translatable comment (so should be in all the key languages at the next release), links to a really good site explaining how to enable JS in all the major browsers, and can be dismissed if someone actually prefers a broken site to one using JS. Here’s an example:
