[css-text-decor-4] Mark issue about initial value of text-decoration-skip-spaces

Author: fantasai

css-text-decor-4/Overview.bs

@@ -111,9 +111,6 @@ Line Decoration: Underline, Overline, and Strike-Through</h2>
 		In Level 3 and beyond, by default only the margins, borders, and padding of the <i>decorating box</i> are skipped.
 		In the future CSS2.1 may be updated to match this new default.
 
-	ISSUE: Also, control over decorating leading/trailing spaces is expected in Level 4,
-		and will be applied by default to the HTML <{ins}> and <{del}> elements.
-
 	Relatively positioning a descendant moves all text decorations
 	applied to it along with the descendant's text; it does not affect
 	calculation of the decoration's initial position on that line.
@@ -989,6 +986,10 @@ Skipping Spaces: the 'text-decoration-skip-spaces' property</h4>
 	Animation type: discrete
 	</pre>
 
+	ISSUE: Should the initial value be ''text-decoration-skip-spaces/none'' for Web-compat?
+	If not, INS and DEL at least should be assigned ''text-decoration-skip-spaces/none'' in the UA default stylesheet.
+	See also <a href="https://github.com/w3c/csswg-drafts/issues/4653">Issue 4653</a>.
+
 	This property specifies whether text decoration skips any spaces.
 	It controls all text decoration lines drawn by the element
 	and also any text decoration lines drawn by its ancestors.