Curiously, Can I Use says: > All major browser engines are working on implementing this spec. However their official positions are absent: https://github.com

Curiously, Can I Use says: > All major browser engines are working on implementing this spec. However their official positions are absent: https://github.com/mozilla/standards-positions/issues/1167 https://github.com/mozilla/standards-positions/issues/1167 https://github.com/WebKit/standards-positions/issues/453 https://github.com/WebKit/standards-positions/issues/453 And Firefox’s bug for implementing it has no activity: https://bugzilla.mozilla.org/show_bug.cgi?id=1981485 https://bugzilla.mozilla.org/show_bug.cgi?id=1981485 And Can I Use’s underlying data doesn’t have this note: https://github.com/Fyrd/caniuse/blob/fedfb067aceccb2a5edadcc8143a8c5be509a006/features-json/css-if.json#L715 https://github.com/Fyrd/caniuse/blob/fedfb067aceccb2a5edadcc... So it’s unclear why the Can I Use website is saying that everybody is working on it.