[csswg-drafts] [css-display] Blockifications should establish BFC in block containers

Loirooriol has just created a new issue for https://github.com/w3c/csswg-drafts:

== [css-display] Blockifications should establish BFC in block containers ==
Like #2598, but just for block containers. If an element has a `flow` inner display type after being blockified, the generated block container should automatically establish an [independent formatting context](https://drafts.csswg.org/css-display-3/#independent-formatting-context).

And therefore the `flow-root` nature won't be lost (in practice) in this case:

> if an `inline flow-root` box (aka `inline-block`) is blockified, it becomes a `block` box (losing its `flow-root` nature).

Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/2673 using your GitHub account