Emails missing from contacts on third-party site

When I log in to icloud.com, my contacts do not show the email addresses even though they have one or two. Even my personal contact does not show. I am using Windows 11 with firefox and edge and none of them shows them. All other contact data (physical address, phones, notes etc) appear normally.

I have latest iOS 26 on my devices. I called apple support and they say that this is a Windows issue, but I don't get it as previously this did not happen.