--- a/layout/style/ServoStyleSet.cpp
+++ b/layout/style/ServoStyleSet.cpp
@@ -702,12 +702,14 @@ ServoStyleSet::ClearNonInheritingStyleCo
   for (RefPtr<nsStyleContext>& ptr : mNonInheritingStyleContexts) {
     ptr = nullptr;
   }  
 }
 
 already_AddRefed<ServoComputedValues>
 ServoStyleSet::ResolveStyleLazily(Element* aElement, nsIAtom* aPseudoTag)
 {
+  mPresContext->EffectCompositor()->PreTraverse(aElement, aPseudoTag);
+
   return Servo_ResolveStyleLazily(aElement, aPseudoTag, mRawSet.get()).Consume();
 }
 
 bool ServoStyleSet::sInServoTraversal = false;