[css-overflow-3] Delete issue.

Author: fantasai

css-overflow-3/Overview.bs

@@ -208,30 +208,6 @@ Scrollable Overflow</h3>
 		<li>
 			the box’s own [=padding box=]
 
-			<div class=issue>
-				There's disagreement on the scrolling model.
-				2.1 apparently defined that you scrolled the *content* area;
-				the content would overflow the content-box,
-				and you would union that overflow with the content box to find the scrollable area.
-				In particular, this means that the content would be offset by the start-sides padding,
-				but if it overflowed,
-				it would go right to the edge on the end sides.
-				This is what Firefox and IE do.
-
-				At least some authors (and spec authors)
-				instead have the mental model that the padding box is what's scrollable,
-				so when you scroll to the end of the overflow,
-				there's the right/bottom padding.
-				Chrome/WebKit do this for the block axis, at least.
-				They're somewhat inconsistent for the inline axis;
-				there's something weird about how they handle lineboxes.
-
-				It seems that the block-axis padding is probably web-compatible to honor.
-				It's unclear that the inline-axis padding will be.
-				Further experimentation is needed.
-			</div>
-
-
 		<li>
 			all line boxes directly contained by the box