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Enterprise login in GitHub Copilot app renders raw CSS instead of authentication UI #1459

Description

@evanmatusz

Short summary

When attempting to sign in to the GitHub Copilot desktop/app experience using enterprise login, the authentication screen does not render correctly. Instead of displaying the expected sign-in UI, the app shows what appears to be raw CSS content (e.g., @font-face, .theme-dark, .c-button, etc.) directly on the screen. This prevents completing the login flow.

Affected version or release

v1.0.9

Installation context

App installed on Windows Machine

What happened?

When I attempt to sign in to the app using the enterprise login path, the app just begins showing pure CSS instead of the login flow.

Image

Steps to reproduce

  1. Open the GitHub Copilot app
  2. Select Sign in with Enterprise
  3. Enter email address
  4. Observe the screen after the authentication flow begins

Expected behavior

I expect the login flow to continue

Additional context

No response

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