I contacted Microsoft Support for this issue and they sent me here. My organization uses SharePoint Online. On our home page, we're using all native Microsoft web parts, and we're not pulling anything in (to our knowledge) from third parties. It's all content being pulled from resources in our in SharePoint Online environment. When Firefox users go to our home page, it refreshes every few seconds. Sometimes 2-3 times and then it settles, but sometimes it's indefinitely and you just end up closing the browser. Microsoft had me run a trace and they told me that they found some weirdness with "Cloudflare" causing Firefox to load over and over. As far as I know, my organization doesn't do anything with Cloudflare. They couldn't really give me much else to go on. I'd never even heard of Cloudflare before this. Does this sound legit or, is Microsoft passing the buck? We are seeing this issue with multiple users, including myself. It ONLY happens with Firefox.