From 11fae85961656a94948b9f2d1cae9fc611af461e Mon Sep 17 00:00:00 2001
From: Alex Lindsay <alexlindsay239@gmail.com>
Date: Fri, 28 Oct 2022 14:59:49 -0700
Subject: [PATCH] Clear the point locator after displacing the mesh

Displacing the mesh invalidates all the bounding boxes on the
point locator, so we need to make sure we clear the locator so
we don't use bad bounding box data

Closes #22534
---
 framework/include/loops/UpdateDisplacedMeshThread.h | 1 +
 framework/src/loops/UpdateDisplacedMeshThread.C     | 7 +++++++
 2 files changed, 8 insertions(+)

diff --git a/framework/include/loops/UpdateDisplacedMeshThread.h b/framework/include/loops/UpdateDisplacedMeshThread.h
index ae4df4f1664e..0dab2d97171c 100644
--- a/framework/include/loops/UpdateDisplacedMeshThread.h
+++ b/framework/include/loops/UpdateDisplacedMeshThread.h
@@ -34,6 +34,7 @@ class UpdateDisplacedMeshThread : public ThreadedNodeLoop<NodeRange, NodeRange::
   virtual void onNode(NodeRange::const_iterator & nd) override;
 
   void join(const UpdateDisplacedMeshThread & /*y*/);
+  void post() override;
 
 protected:
   void init();
diff --git a/framework/src/loops/UpdateDisplacedMeshThread.C b/framework/src/loops/UpdateDisplacedMeshThread.C
index cb0921657c0c..d1c93dd0b7de 100644
--- a/framework/src/loops/UpdateDisplacedMeshThread.C
+++ b/framework/src/loops/UpdateDisplacedMeshThread.C
@@ -13,6 +13,7 @@
 #include "DisplacedProblem.h"
 #include "MooseMesh.h"
 
+#include "libmesh/mesh_base.h"
 #include "libmesh/numeric_vector.h"
 #include "libmesh/transient_system.h"
 #include "libmesh/explicit_system.h"
@@ -142,6 +143,12 @@ UpdateDisplacedMeshThread::onNode(NodeRange::const_iterator & nd)
   }
 }
 
+void
+UpdateDisplacedMeshThread::post()
+{
+  _displaced_problem.mesh().getMesh().clear_point_locator();
+}
+
 void
 UpdateDisplacedMeshThread::join(const UpdateDisplacedMeshThread & /*y*/)
 {