[css-sizing-3] #6341 Per WG resolution, fixed lengths transfer across the aspect ratio when dealing with cyclic %s on replaced elements.

Author: tabatkins

css-sizing-3/Overview.bs

@@ -1085,9 +1085,23 @@ Intrinsic Contributions of Percentage-Sized Boxes</h4>
 		is resolved against zero
 		when calculating the <a>min-content contribution</a> in the corresponding axis.
 		(See [[#min-content-zero]] for a list of which elements in HTML this applies to.)
-		The UA may additionally floor this size based on UI considerations,
+		If the box also has a [=preferred aspect ratio=],
+		then this [=min-content contribution=] is floored
+		by any <<length-percentage>> [=minimum size=] from the opposite axis--
+		resolving any such percentage against zero--
+		transferred through the [=preferred aspect ratio=].
+		<!-- https://github.com/w3c/csswg-drafts/issues/6341 -->
+
+		ISSUE: Should we resolve transferred percentages against their containing block instead of zero before transferring them? See <a href="https://github.com/w3c/csswg-drafts/issues/6341">discussion</a>.
+
+		The UA may additionally floor the [=min-content contribution=]
+		based on UI considerations,
 		such as ensuring certain UI elements remain visible
 		(for example, the dropdown arrow on a <{select}>).
+
+		Note: The [=min-content contribution=] is, as always,
+		also floored by the [=minimum size=] in its own axis.
+
 		This rule also applies when calculating
 		a content-based <a>automatic minimum size</a>
 		or its corresponding size contribution,