Clarification about float clearance in the automatic block size

Author: andreubotella

css-overflow-4/Overview.bs

@@ -1203,6 +1203,12 @@ Fragmentation of Overflow: the 'continue' property</h3>
 	its [=automatic block size=] will not take into account any of its children after the clamp point.
 	This also applies for the [=line-clamp container=] itself.
 
+	NOTE: If there are any floats before the [=clamp point=], the [=line-clamp container=]'s
+	automatic size must grow to encompass the clearance, just like it would if it were a regular
+	[=block formatting context=] root that only contained its contents before the [=clamp point=].
+	This is regardless of whether this would cause any content after the [=clamp point=] to be
+	within the container's bounds.
+
 <h2 id=sbg-ext class=nonum>
 Appendix A: Possible extensions for ''scrollbar-gutter''</h2>