[css-overflow] Not all boxes establish an independent formatting context due to overflow

[Loirooriol]

CSS Display says https://drafts.csswg.org/css-display-3/#establish-an-independent-formatting-context

Turning a block into a scroll container will cause it to establish an independent formatting context; however turning a subgrid into a scroll container will not—it continues to act as a subgrid, with its contents participating in the layout of its parent grid container.

But CSS Overflow has no exception for subgrid: https://drafts.csswg.org/css-overflow-3/#scroll-container

If the computed value of overflow on a block box is neither visible nor clip nor a combination thereof, it establishes an independent formatting context for its contents.

CSS Display is just giving examples, so it's not clear if there are other exceptions that are not present in CSS Overflow either. This should be properly defined in CSS Overflow.

[Loirooriol]

Erg, I missed "block box".