I do have the exact same problem. Happens in Chrome, Firefox, Edge (Chromium) since 6.7.0 extension. You are not able to select fields in Service Now https://www.servicenow.com/ Pobably no Service Now User will be able to tell you a website as those are all customer instances only the customer has access to. The only way you could check this is probably with a ServiceNow developer instance (its free for everyone but will be deleted after 7 days of inactivty) which also replicates how customer instances are working. It can be requested after registration from here. Unfortunately black listing your instances sites doesnt seem to work. Only disabling pop-ups seem to fix the issue for now. Will this help you to fix the issue?