Issue Summary

After upgrading from Confluence DC 10.2.11 to 10.2.13, multiple UI elements became invisible.

So far the following have been identified as affected but there can be other elements affected. 

Steps to Reproduce

1. Install Confluence DC 10.2.13
2. Configure at least one SAML Identity Provider in Administration > Authentication methods
3. Ensure the default login form (Show on login page) is enabled
4. Add the following system property 

   CATALINA_OPTS="-Datlassian.authentication.legacy.mode=true ${CATALINA_OPTS}" 

5. Observe the "Continue with username and password" link is invisible
6. Navigate to Administration > Troubleshooting and Support > Support Tools
7. Observe the "Download support zip" button is invisible

Expected Results

All UI elements — including the "Continue with username and password" link and the "Download support zip" button — should be clearly visible against their backgrounds in both light and dark modes.

Actual Results

Both elements are invisible.

Workaround

For login page "Continue with username and password" link:

• Add the following CSS to Administration > Look and Feel > Custom HTML > Before </head>: 

  <style>
  a[data-testid="product-login-url-button"] span,
  a[data-testid="product-login-url-button"] {
    color: #FFFFFF !important;
  }
  </style>