Issue Summary

The option to "Listen to briefing" is disabled on Firefox browser and, upon hover, displays a "Your browser doesn't support this feature" message.

This happens despite having Firefox updated to its latest version.

Steps to Reproduce

1. Access, via Firefox, any page with enough content to display the "Listen to briefing" option
2. Hover the option

Expected Results

The option should be clickable/enabled and allow users to listen to the audio briefing for the page content.

Actual Results

Option is disabled and says "Your browser doesn't support this feature".

Workaround

For the moment, the only workaround is accessing the page via a different browser.