[css-position-3] Per w3c#6580 (comment), tables need to shrink-wrap as well.

Author: tabatkins

css-position-3/Overview.bs

@@ -895,7 +895,8 @@ Automatic Sizes of Absolutely-Positioned Boxes</h3>
 	<dl class=switch>
 		: If its [=self-alignment property=] in the relevant axis is ''align-self/stretch''
 		: Or if it is ''align-self/normal''
-			and the box is [=non-replaced=]
+			and the box is [=non-replaced=],
+			not a [=table wrapper box=],
 			and has no ''inset/auto'' [=inset property|inset=] in the relevant axis
 		::
 			Its [=automatic size=] is its [=stretch-fit size=].