Created attachment 8923139 [details] about_debugging_tabs.png Steps to reproduce: 1. Open about:debugging#tabs. 2. Open "https://www.mozilla.org/en-US/" in a new tab. 3. Open "https://developer.mozilla.org/en-US/" in a new tab. Actual Results: "www.mozilla.org" tab-icon-image is available. But, target-icon is missing in about:debugging#tabs. "https://developer.mozilla.org" tab-icon-image is red. But target-icon is blue in about:debugging#tabs. Expected Results: Is this intentional? If not, target-icon is same with tab-icon-image.
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