[css-inline-3] Adjust wording in note, reshuffle issue text. w3c#5234

Author: fantasai

css-inline-3/Overview.bs

@@ -692,11 +692,9 @@ Transverse Box Alignment: the 'vertical-align' property</h3>
 	when 'align-content' is ''align-content/normal''.
 	Specifically, ''vertical-align/top'' (''baseline-shift: top'') maps it to ''align-content/start'',
 	''vertical-align/bottom'' (''baseline-shift: bottom'')  to ''align-content/end'',
-	and ''vertical-align/middle'' (''alignment-baseline: middle'') to ''align-content/center''.
+	and otherwise ''vertical-align/middle'' (''alignment-baseline: middle'') to ''align-content/center''.
 	See [[css-align-3#distribution-block]].
 
-	ISSUE(5234): Define mapping of ''alignment-baseline: middle; baseline-shift: top''.
-
 <h4 id="baseline-source">
 Alignment Baseline Source: the 'baseline-source' longhand</h4>
 
@@ -885,6 +883,14 @@ Post-Alignment Shift: the 'baseline-shift' longhand</h4>
 	is the highest [=over=] edge of the [=layout bounds=] in the subtree,
 	and the [=line-under=] edge is analogously the lowest.
 
+	ISSUE: The [=line-relative values=] don't fit perfectly
+	in the dichotomy between 'alignment-baseline' and 'baseline-shift'.
+	There's <a href="https://github.com/w3c/csswg-drafts/issues/5180">decent</a> <a href="https://github.com/w3c/csswg-drafts/issues/5234">arguments</a>
+	for either option.
+	They're currently drafted here,
+	but if there's a strong argument to move them,
+	please file an issue for consideration.
+
 <h5 class="no-toc" id="baseline-shift-svg-legacy">
 Legacy Values for SVG</h5>