What Does It Mean to Use tabindex=-1 on a type=radio Input Element?

[sb3nder]

What is the issue with the HTML Standard?

It's not immediately clear to me how a radiogroup should behave when one of its radio inputs has tabindex=-1.

Test page: https://codepen.io/sb3nder/pen/pvyGWRK (test 5, test 7)

Blink:

Blink.mp4

Gecko:

Gecko.mp4

Webkit:

Webkit.mp4