diff options
| -rw-r--r-- | dom/base/DOMIntersectionObserver.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/dom/base/DOMIntersectionObserver.cpp b/dom/base/DOMIntersectionObserver.cpp index 389b93071..70b5534ba 100644 --- a/dom/base/DOMIntersectionObserver.cpp +++ b/dom/base/DOMIntersectionObserver.cpp @@ -339,6 +339,7 @@ DOMIntersectionObserver::Update(nsIDocument* aDocument, DOMHighResTimeStamp time for (size_t i = 0; i < mObservationTargets.Length(); ++i) { Element* target = mObservationTargets.ElementAt(i); nsIFrame* targetFrame = target->GetPrimaryFrame(); + nsIFrame* originalTargetFrame = targetFrame; nsRect targetRect; Maybe<nsRect> intersectionRect; bool isSameDoc = root && root->GetComposedDoc() == target->GetComposedDoc(); @@ -424,7 +425,7 @@ DOMIntersectionObserver::Update(nsIDocument* aDocument, DOMHighResTimeStamp time ); if (intersectionRect.isSome() && !isSameDoc) { nsRect rect = intersectionRect.value(); - nsPresContext* presContext = targetFrame->PresContext(); + nsPresContext* presContext = originalTargetFrame->PresContext(); nsLayoutUtils::TransformRect(rootFrame, presContext->PresShell()->GetRootScrollFrame(), rect); intersectionRect = Some(rect); |