ui: Button "Sign In with GitHub to agree" causes confusion

[Steven R. Loomis]

URL to the linked Repository or Organization

• any

Steps to reproduce the problem

• attempt to sign a CLA with metadata (custom fields)

What is the expected result?

• I would expect the custom fields to show up even before the user signs in, so they know what will be expected.
• I would expect the user would know they must login BEFORE they sign the CLA

What happens instead?

• only the "I accept … privacy policy" message shows up.
• The button "Sign In with GitHub to agree" makes users think that clicking that button actually signs the CLA

Any other information? (attach screenshot if possible)

but once you click that button:

Used browser and browser version?

any