Firefox users need to go to about:config and set settingnetwork.IDN_show_punycode to true.

The phishing potential for this issue is huge.

https://www.xudongz.com/blog/2017/idn-phishing/

@krypteia my mac firefox allows to distinguish between "l" and "ÓŹ". See screenshot. however, it is an issue! https://mastodon.social/media/htAUv4tOnIYJCA1dMO0