(In reply to Jonathan Watt [:jwatt] from comment #4) > - popover-anchor-backdrop-transition.html We don't support animations/transitions. > - popover-anchor-change-display.tentative.html Uses the non-standard ["anchor"](https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Global_attributes/anchor) attribute, which only Chrome has (behind a flag). Unsurprisingly Firefox and Safari Tech Preview both fail this in almost the same way. > - popover-anchor-display.tentative.html Uses the non-standard ["anchor"](https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Global_attributes/anchor) attribute, which only Chrome has (behind a flag). Unsurprisingly Firefox and Safari Tech Preview both fail this in almost the same way. > - [popover-anchor-idl-property.tentative.html](https://searchfox.org/firefox-main/source/testing/web-platform/tests/html/semantics/popovers/popover-anchor-idl-property.tentative.html) Depends on the non-standard "anchor" attribute and on the non-standard [anchorElement](https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/anchorElement) IDL property. > - popover-anchor-inset-rule-display.tentative.html Depends on the non-standard "anchor" attribute. Also seems to fail in the same way in Chrome Canary and Safari Tech Preview. > - popover-anchor-multicol-display.tentative.html Again, depends on the non-standard "anchor" attribute. > - popover-anchor-nested-display.tentative.html Again, depends on the non-standard "anchor" attribute. > - popover-anchor-scroll-display.tentative.html Again, depends on the non-standard "anchor" attribute.
Bug 1867737 Comment 5 Edit History
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(In reply to Jonathan Watt [:jwatt] from comment #4) > - popover-anchor-backdrop-transition.html We don't support animations/transitions. > - popover-anchor-change-display.tentative.html Uses the non-standard ["anchor"](https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Global_attributes/anchor) attribute, which only Chrome has (behind a flag). Unsurprisingly Firefox and Safari Tech Preview both fail this in almost the same way. > - popover-anchor-display.tentative.html Uses the non-standard "anchor" attribute. Unsurprisingly Firefox and Safari Tech Preview both fail this in almost the same way. > - popover-anchor-idl-property.tentative.html Depends on the non-standard "anchor" attribute and on the non-standard [anchorElement](https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/anchorElement) IDL property. > - popover-anchor-inset-rule-display.tentative.html Depends on the non-standard "anchor" attribute. Also seems to fail in the same way in Chrome Canary and Safari Tech Preview. > - popover-anchor-multicol-display.tentative.html Again, depends on the non-standard "anchor" attribute. > - popover-anchor-nested-display.tentative.html Again, depends on the non-standard "anchor" attribute. > - popover-anchor-scroll-display.tentative.html Again, depends on the non-standard "anchor" attribute.