[css-inline-3] Mark issue

Author: fantasai

css-inline-3/Overview.bs

@@ -656,6 +656,9 @@ Dominant Baselines: the 'dominant-baseline' property</h3>
 
 	See [[CSS-WRITING-MODES-3]] for an introduction to dominant baselines.
 
+	ISSUE: Define behavior for mixed vertical orientations that isn't nonsensical
+	when specified baseline isn't ''dominant-baseline/central''.
+
 <h3 id="transverse-alignment">
 Transverse Box Alignment: the 'vertical-align' property</h3>
 
@@ -1351,6 +1354,8 @@ Inline Box Heights: the 'inline-sizing' property</h3>
 	Animation type: discrete
 	</pre>
 
+	ISSUE(5189): This has a confusing name. We need a new name.
+
 	This property specifies how the <a>logical height</a>
 	of the <a>content area</a> of an <a>inline box</a>
 	is measured in relation to its contents.