Unfortunately, this is not something I can reproduce. Please note we only support the default browser on a device, e.g. Android is Chrome and iOS is Safari. If you're using Firefox on a computer and encountering an issue, please submit a ticket as we will need to look at this on your community.
You're more than welcome to submit a ticket if there is something specific with a member. A technician will then be able to tell you what we need from the user to move forward. Typically, if this is related to a browser, device, or OS, we require that information so gathering that prior will be helpful. Other than that, it would really be a case by case basis what the technician may require next, if at all, from the user.