--- a/layout/base/ServoRestyleManager.cpp
+++ b/layout/base/ServoRestyleManager.cpp
@@ -965,24 +965,27 @@ ServoRestyleManager::ProcessPostTraversa
     }
   }
 
   // We want to update frame pseudo-element styles after we've traversed our
   // kids, because some of those updates (::first-line/::first-letter) need to
   // modify the styles of the kids, and the child traversal above would just
   // clobber those modifications.
   if (styleFrame) {
-    // Process anon box wrapper frames before ::first-line bits.
-    childrenRestyleState.ProcessWrapperRestyles(styleFrame);
-
     if (wasRestyled) {
       // Make sure to update anon boxes and pseudo bits after updating text,
-      // otherwise we could clobber first-letter styles from
-      // ProcessPostTraversalForText, for example.
+      // otherwise ProcessPostTraversalForText could clobber first-letter
+      // styles, for example.
       styleFrame->UpdateStyleOfOwnedAnonBoxes(childrenRestyleState);
+    }
+    // Process anon box wrapper frames before ::first-line bits, but _after_
+    // owned anon boxes, since the children wrapper anon boxes could be
+    // inheriting from our own owned anon boxes.
+    childrenRestyleState.ProcessWrapperRestyles(styleFrame);
+    if (wasRestyled) {
       UpdateFramePseudoElementStyles(styleFrame, childrenRestyleState);
     } else if (traverseElementChildren &&
                styleFrame->IsFrameOfType(nsIFrame::eBlockFrame)) {
       // Even if we were not restyled, if we're a block with a first-line and
       // one of our descendant elements which is on the first line was restyled,
       // we need to update the styles of things on the first line, because
       // they're wrong now.
       //