I recently switched over to Thunderbird for my email client. I pointed my Gmail to go to Thunderbird. After doing so, I discovered that every single old and new email in Gmail (when trying to view in Firefox) were blank. Hoping to resolve the issue, I stopped forwarding Gmail to Thunderbird, then I deleted the Gmail account from Thunderbird. Finally I uninstalled Thunderbird and emptied the cache and cookies. Still have blank emails when opened in Firefox. Chrome Edge & IE work fine. I'd prefer to keep using Firefox over the other browsers. Thanks for any & all suggestions and help you may have to offer.