Autofill doesn't fill in "Username or email" field in account.proton.me

[LuisAPI]

Bug report

Steps to reproduce - current behaviour

1. Go to https://account.proton.me
2. See a login screen with two fields: "Username or email" and "Password"
3. Click on the first field
4. Open Tusk and log in to your database
5. Select an account entry and click the Autofill button on the bottom-right
6. See your text cursor(the I thingy?) move on to the Password field without filling in your email address

What is the expected behaviour

"Username or email" field should fill in with your email address.

Additional remarks

A workaround is to:

1. Manually type in your email
2. Click the Password field
3. Autofill that part; it works
4. Click the purple "Log in" button

Environment

Operating System: Windows 10 Pro 22H2 (OS Build 19045.5854)

Browser vendor and version: Google Chrome 136.0.7103.93 (Official Build) (64-bit)

Storage Provider: Tab Digital (Emma server) instance of Nextcloud, via "Direct Link" feature