That's correct. Is that a problem? (Genuine question, I don't know if it is or not.) The bug is closed because this feature is implemented, though it's disabled-by-default ([except in Nightly](https://searchfox.org/mozilla-central/rev/a17011de808c24f015ad03debe7a157c1b43b602/modules/libpref/init/StaticPrefList.yaml#7571-7574)). It's in Features.toml to provide people a way to enable it, if they want. It's not clear how soon we might be able to enable this more broadly, in part because no other browser vendor has started working on the feature, to my knowledge. (Though it's gotten some discussion in the CSSWG standards body.) If it's administratively useful for Features.toml to only link to bugs-that-are-still-open, we could definitely file a tracking bug to cover letting this feature masonry ship to release", though - just let me know.
Bug 1607954 Comment 27 Edit History
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That's correct. Is that a problem? (This is a genuine question; I don't know if it is or not, since I'm not familiar with conventions that might exist around management of this Features.toml file.) This bug is closed as fixed because this feature is implemented, though it's disabled-by-default ([except in Nightly](https://searchfox.org/mozilla-central/rev/a17011de808c24f015ad03debe7a157c1b43b602/modules/libpref/init/StaticPrefList.yaml#7571-7574)). It's in Features.toml to provide people a way to enable it and test it in other releases, if they want. It's not clear how soon we might be able to enable this more broadly, in part because no other browser vendor has started working on the feature, to my knowledge. (Though it's gotten some discussion in the CSSWG standards body.) If it's administratively useful for Features.toml to only link to bugs-that-are-still-open, we could definitely file a tracking bug to cover letting this feature masonry ship to release", though - just let me know.