Hi @craigleren Thanks for posting this, this definitely sounds like odd behavior and was most likely due to a browser extension.
What sites are you seeing this issue occur in? When did it start occurring? Can you send me the site Read-Only links please?
Typically I would ask that you try reproduce the behavior in Incognito mode but it sounds like you were not able to? Can you please confirm?
Could you please let me know what browser version you're using by sending me your information from this page?
There should be a small share link when you visit the page which you can send to me.