--- a/gfx/layers/apz/src/AsyncPanZoomController.cpp
+++ b/gfx/layers/apz/src/AsyncPanZoomController.cpp
@@ -893,16 +893,20 @@ nsEventStatus AsyncPanZoomController::Ha
   if (!gfxPrefs::APZDragEnabled()) {
     return nsEventStatus_eIgnore;
   }
 
   if (!GetApzcTreeManager()) {
     return nsEventStatus_eConsumeNoDefault;
   }
 
+  if (aEvent.mType == MouseInput::MouseType::MOUSE_UP) {
+    ScrollSnap();
+  }
+
   if (aEvent.mType != MouseInput::MouseType::MOUSE_MOVE) {
     return nsEventStatus_eConsumeNoDefault;
   }
 
   RefPtr<HitTestingTreeNode> node =
     GetApzcTreeManager()->FindScrollNode(aDragMetrics);
   if (!node) {
     return nsEventStatus_eConsumeNoDefault;