Hey Lauren, can you take a screenshot? I believe you are referring to the loading animation on the tab, this happens when the page is loading, do you know see also when the tab is fully loaded?

Yes, I'm sure that is what it is, however many of my tabs are showing it continuously even when the pages are finished loading and the moving dots are kind of annoying.

This sounds frustrating indeed. You can start by clearing your cookies and site data, you can see how to do this here: https://support.mozilla.org/en-US/kb/clear-cookies-and-site-data-firefox If this doesn't work, try to restart your browser on Troubleshoot mode: https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode

Let me know if any of those solutions helped.