As a quick check, can you open your file in an alternate browser (Chrome, Firefox, Safari, Edge) and see if the same occurs there? If it’s limited to the Desktop app, then clearing your cache should help resolve the issue. You can clear the desktop app cache on a Mac in the Help menu under Troubleshooting.
In most cases, this problem is caused by a browser extension you have set up on your browser. It can even happen across devices if you use the same chrome profile, which includes these extensions as well. Can you please try disabling your browser extensions one by one and then check after each to see which one is causing the issue.
I would also suggest checking any antivirus software or firewalls you might have and updating to the latest version.
If you have any further questions or concerns, please do not hesitate to post again!
Hi Toku - what browser extensions typically cause this issue?