Just one little problem. I can't login to my Wolfram account (account.wolfram.com) with the extension enabled. Weird.

Great Idea

while there is option to create new alias, while filling a form, it will be good to have an option to fill existing alias. May be someone want to use 1 alias at multiple site.

This extension is absolutely great! Only one page broke due to this extension: https://sacola.magazineluiza.com.br/#/cliente/login/?next=/acompanhamento/&origin=magazineluiza

When trying to login, the email input field on the left stays on top of the reCaptcha prompt, which makes it impossible to read what I should click on.

Good work Mozilla!

So far, so good.
Work as expected.
Easy setup.