--- a/layout/generic/ScrollAnchorContainer.cpp
+++ b/layout/generic/ScrollAnchorContainer.cpp
@@ -247,28 +247,28 @@ void ScrollAnchorContainer::UserScrolled
 }
 
 void ScrollAnchorContainer::SuppressAdjustments() {
   ANCHOR_LOG("Received a scroll anchor suppression for %p.\n", this);
   mSuppressAnchorAdjustment = true;
 }
 
 void ScrollAnchorContainer::InvalidateAnchor() {
-  if (!StaticPrefs::layout_css_scroll_anchoring_enabled()) {
-    return;
-  }
-
   ANCHOR_LOG("Invalidating scroll anchor %p for %p.\n", mAnchorNode, this);
 
   if (mAnchorNode) {
     SetAnchorFlags(mScrollFrame->mScrolledFrame, mAnchorNode, false);
   }
   mAnchorNode = nullptr;
   mAnchorNodeIsDirty = true;
   mLastAnchorOffset = 0;
+
+  if (!StaticPrefs::layout_css_scroll_anchoring_enabled()) {
+    return;
+  }
   Frame()->PresShell()->PostPendingScrollAnchorSelection(this);
 }
 
 void ScrollAnchorContainer::Destroy() {
   if (mAnchorNode) {
     SetAnchorFlags(mScrollFrame->mScrolledFrame, mAnchorNode, false);
   }
   mAnchorNode = nullptr;