From the docs over the

Surface

dec:

Elevation: Surface elevates its children on the Z axis by elevation pixels, and draws the appropriate shadow.

Does that mean that the

Surface

sets the

Modifier.zIndex()

value of all it's children?

this doc is actually a bit outdated. previously Surface was using the given elevation both as a shadow size and as zIndex. now we removed the auto passing it as a zIndex()

Thank you for the response the context of this question is my previous one which you responded to as well. I'll ask my follow ups there.