label.form IDL attribute should be an alias for label.control.form. <label form> content attribute should have no effect. Spec change https://github.com/whatwg/html/pull/1120 Tests https://github.com/w3c/web-platform-tests/pull/2926
This is now fixed in Chromium and Gecko I believe.
Safari Technology Preview 152 pass all tests: https://wpt.fyi/results/html/semantics/forms/form-control-infrastructure/form.html?label=master&label=experimental&aligned&view=subtest&q=%2Fsemantics%2Fforms%2Fform-control-infrastructure%2Fform.html Is anything else needed here? Thanks!
I don't think so -- I think we can close this.