diff --git a/components/style/dom.rs b/components/style/dom.rs
index 3402912168a..184e926ef40 100644
--- a/components/style/dom.rs
+++ b/components/style/dom.rs
@@ -236,6 +236,7 @@ pub trait TElement : PartialEq + Sized + Copy + Clone + ElementExt + Presentatio
             unsafe { node.set_dirty(true); }
         // XXX(emilio): For now, dirty implies dirty descendants if found.
         } else if hint.contains(RESTYLE_DESCENDANTS) {
+            unsafe { node.set_dirty_descendants(true); }
             let mut current = node.first_child();
             while let Some(node) = current {
                 unsafe { node.set_dirty(true); }
diff --git a/tests/wpt/metadata-css/css-flexbox-1_dev/html/flexbox_columns.htm.ini b/tests/wpt/metadata-css/css-flexbox-1_dev/html/flexbox_columns.htm.ini
deleted file mode 100644
index 093654531dd..00000000000
--- a/tests/wpt/metadata-css/css-flexbox-1_dev/html/flexbox_columns.htm.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[flexbox_columns.htm]
-  type: reftest
-  expected: FAIL