[context-menu] menu entry for explorer not active when pre-configured to be active

When configuring mathjax to enable exploration, e.g.,

  MathJax = {
          loader: {
            load: ['a11y/semantic-enrich', 'a11y/explorer'],
          },
          options: {
            enableExplorer: true,
            a11y: {
              speech: true, // switch on speech output
              braille: true, // switch on Braille output
              subtitles: true, // show speech as a subtitle
            },
          },
        };

the settings work but the context menu does not reflect this, i.e., under "Accessibility" the first item "Activate" is not checked and the submenus are not available.

Once I check the menu item "Activate", it's ok (and no re-rendering happens).

I suspect it's an issue with zorkow/context-menu but I thought I'd start here.