diff --git a/components/layout/construct.rs b/components/layout/construct.rs
index 6478bc64d21..3d023c009f2 100644
--- a/components/layout/construct.rs
+++ b/components/layout/construct.rs
@@ -419,7 +419,7 @@ impl<'a> FlowConstructor<'a> {
                 // between block elements, and retained when between inline elements.
                 let fragment_info = UnscannedTextFragment(UnscannedTextFragmentInfo::from_text(" ".to_string()));
                 let mut fragment = Fragment::from_opaque_node_and_style(whitespace_node,
-                                                                    whitespace_style.clone(),
+                                                                    whitespace_style,
                                                                     fragment_info);
                 inline_fragment_accumulator.fragments.push(&mut fragment);
             }
@@ -583,7 +583,7 @@ impl<'a> FlowConstructor<'a> {
                     // Instantiate the whitespace fragment.
                     let fragment_info = UnscannedTextFragment(UnscannedTextFragmentInfo::from_text(" ".to_string()));
                     let mut fragment = Fragment::from_opaque_node_and_style(whitespace_node,
-                                                                        whitespace_style.clone(),
+                                                                        whitespace_style,
                                                                         fragment_info);
                     fragment_accumulator.fragments.push(&mut fragment)
                 }
diff --git a/components/layout/css/matching.rs b/components/layout/css/matching.rs
index 90526ef0e8f..564e5f6569f 100644
--- a/components/layout/css/matching.rs
+++ b/components/layout/css/matching.rs
@@ -619,6 +619,10 @@ impl<'ln> MatchMethods for LayoutNode<'ln> {
             &Some(ref mut layout_data) => {
                 match self.type_id() {
                     Some(TextNodeTypeId) => {
+                        // Text nodes get a copy of the parent style. This ensures
+                        // that during fragment construction any non-inherited
+                        // CSS properties (such as vertical-align) are correctly
+                        // set on the fragment(s).
                         let cloned_parent_style = parent_style.unwrap().clone();
                         layout_data.shared_data.style = Some(cloned_parent_style);
                     }
diff --git a/components/layout/inline.rs b/components/layout/inline.rs
index dd473d8edda..d67bbe5e0d6 100644
--- a/components/layout/inline.rs
+++ b/components/layout/inline.rs
@@ -917,6 +917,9 @@ impl InlineFlow {
         let mut block_size_above_baseline = inline_metrics.block_size_above_baseline;
         let mut depth_below_baseline = inline_metrics.depth_below_baseline;
 
+        // CSS section 10.8
+        // line-height of any inline element specifies the minimal height of line
+        // boxes within the element.
         for frag in self.fragments.fragments.iter() {
             match frag.inline_context {
                 Some(ref inline_context) => {
diff --git a/tests/ref/basic.list b/tests/ref/basic.list
index 923c474a49a..3ad68958f37 100644
--- a/tests/ref/basic.list
+++ b/tests/ref/basic.list
@@ -106,7 +106,7 @@ fragment=top != ../html/acid2.html acid2_ref.html
 # Should be != with expected failure:
 # FIXME: use the real test when pixel-snapping for scrolling is fixed.
 #fragment=top == ../html/acid2.html acid2_ref_broken.html
-== acid2_noscroll.html acid2_ref_broken.html
+flaky_linux == acid2_noscroll.html acid2_ref_broken.html
 
 != inline_background_a.html inline_background_ref.html
 == inline_element_border_a.html inline_element_border_ref.html