"Mozilla" text is wrongly displayed instead of "Terms" text in the footer of the page

[SoftVision-CosminMuntean]

[Notes]:

• If the "Mozilla" text is clicked, you are redirected to the Mozilla "Terms of Service" page.

[Affected versions]:

• Nightly 57/0a1
• Screenshots 13.0.4794

[Affected Platforms]:

• All Windows
• All Mac
• All Linux

[Prerequisites]:

• The "xpinstall.signatures.required" boolean pre is set to "false".
• Have a custom Screenshots stage build installed on a new Firefox profile.

[Steps to reproduce]:

1. Start the browser with the profile from prerequisites and navigate to "https://screenshots.dev.mozaws.net/shots" page.
2. Observe the right part of the footer of the page.

[Expected result]:

• "Terms", "Privacy Notice", "Report IP Infringement", "Give Feedback", "GitHub" and "Remove All Data" links are displayed.

[Actual results]:

• The "Mozilla" text is displayed instead of "Terms" text.

[Additional Notes]:

• The issue is also reproducible on production.
• Here is a screenshot with the issue:
  

[SoftVision-CosminMuntean]

I have retested this issue and is no longer reproducible on dev and stage servers. Marking as verified.