extra characters being added to password trying to log into Voicemail

I use Edge on Windows11 and when I type in my password and then hit enter additional dots are displayed that make it appear more information is being added to the password field. This is not the case as I am able to successfully login with the password I typed.

I'm not sure if it's the browser or the website that is doing this but it doesn't appear to affect my ability to login successfully.

I don't have Chrome or Safari but I suspect a similar things is happening there.