Affected versions

• 78.0a1;

Affected platforms

• all

Steps to reproduce

• devtools.inspector.compatibility.enabled preff on true;

1. Launch Firefox open the DevTools inspector - Compatibility tab;
2. Access any page, select any property that has compatibility issues from the inspector;
3. Hover over the compatibility icon for any browser;

Expected result

• latest browser versions are displayed on the tooltip;

Actual result

• list for them is manually updated, browser versions might not be latest ones when checking;

Regression range

• not a regression;

Additional notes

• as per initial issue(reported by :atrif), the image attached illustrates the current nightly version and the ones displayed by the tooltip in the panel;
• here's a link to the slack discussion, for better context;