[css-overflow-3] Including block-layout inline padding in scrollable

Including block-layout inline padding in scrollable overflow is optional
while the investigation of web compatibility is ongoing. This is
deliberate.

See #129

Author: frivoal

css-overflow-3/Overview.bs

@@ -280,11 +280,15 @@ Scrollable Overflow</h3>
 			in the inline axis if 'align-content'
 			is ''justify-content/normal''.
 
-			Issue(129): It's not yet clear if including inline-axis padding here is Web-compatible,
-			so this clause is optional while under investigation.
+			Note: It's hoped that including including inline-axis padding here is Web-compatible
+			as that is a better behavior,
+			but investigation as to whether that can be done without breaking existing content has not yet concluded.
+			This clause is optional while under investigation.
 			Existing behavior in the inline axis is
-			<a href="http://jsbin.com/digadoyohi/1/edit?html,css,output">not</a>
-			<a href="http://jsbin.com/vexahocayi/1/edit?html,css,output">clear</a>.
+			<a href="https://www.software.hixie.ch/utilities/js/live-dom-viewer/?saved=8496">quirky</a>
+			<a href="https://www.software.hixie.ch/utilities/js/live-dom-viewer/?saved=8499">and</a>
+			<a href="https://www.software.hixie.ch/utilities/js/live-dom-viewer/?saved=9539">inconsistent</a>.
+			See <a href="https://github.com/w3c/csswg-drafts/issues/129">Issue 129</a>.
 
 			<!-- Make sure http://jsbin.com/qececaqilo/edit?html,css,output is clearly defined. -->
 	</ul>