--- a/layout/base/nsDisplayList.cpp
+++ b/layout/base/nsDisplayList.cpp
@@ -6369,16 +6369,23 @@ nsDisplayPerspective::BuildLayer(nsDispl
 
   Matrix4x4 perspectiveMatrix;
   DebugOnly<bool> hasPerspective =
     nsDisplayTransform::ComputePerspectiveMatrix(mTransformFrame, appUnitsPerPixel,
                                                  perspectiveMatrix);
   MOZ_ASSERT(hasPerspective, "Why did we create nsDisplayPerspective?");
 
   /*
+   * ClipListToRange can remove our child after we were created.
+   */
+  if (!mList.GetChildren()->GetTop()) {
+    return nullptr;
+  }
+
+  /*
    * The resulting matrix is still in the coordinate space of the transformed
    * frame. Append a translation to the reference frame coordinates.
    */
   nsDisplayTransform* transform =
     static_cast<nsDisplayTransform*>(mList.GetChildren()->GetTop());
 
   Point3D newOrigin =
     Point3D(NSAppUnitsToFloatPixels(transform->ToReferenceFrame().x, appUnitsPerPixel),