(bug 1842574 comment 11 part B might suggest we leave this open, but I'll keep it closed in this case because here the site has changed sufficiently that the issue is no longer testable there, per comment 4. The testcases are still useful for testing, but they're not reflecting an actual in-the-wild webcompat issue, and they're essentially just direct testcases for bug 1884807.)
Bug 1826410 Comment 6 Edit History
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(bug 1842574 comment 11 part B might suggest we leave this open, but I'll keep it closed in this case because here the site has changed sufficiently that the issue is no longer testable there, per comment 4. The testcases are still useful for confirming that the bug-with-the-site-as-it-used-to-exist-is-now-fixed, but they're not reflecting an actual in-the-wild webcompat issue at an identified site, and they're essentially just direct testcases for bug 1884807.)