source/blender/blenkernel/intern/displist.cc

@@ -745,6 +745,7 @@ static GeometrySet curve_calc_modifiers_post(Depsgraph *depsgraph,
     if (mti->type == eModifierTypeType_OnlyDeform) {
       mti->deformVerts(
           md, &mectx_deform, mesh, BKE_mesh_vert_positions_for_write(mesh), mesh->totvert);
+      BKE_mesh_tag_positions_changed(mesh);
     }
     else {
       Mesh *output_mesh = mti->modifyMesh(md, &mectx_apply, mesh);

source/blender/blenkernel/intern/mball.cc

@@ -687,6 +687,7 @@ void BKE_mball_data_update(Depsgraph *depsgraph, Scene *scene, Object *ob)
   if (ob->parent && ob->parent->type == OB_LATTICE && ob->partype == PARSKEL) {
     BKE_lattice_deform_coords(
         ob->parent, ob, BKE_mesh_vert_positions_for_write(mesh), mesh->totvert, 0, nullptr, 1.0f);
+    BKE_mesh_tag_positions_changed(mesh);
   }
 
   ob->runtime.geometry_set_eval = new GeometrySet(GeometrySet::create_with_mesh(mesh));

source/blender/blenkernel/intern/particle_system.c

@@ -3500,6 +3500,7 @@ static void do_hair_dynamics(ParticleSimulationData *sim)
                    sim->ob,
                    psys->hair_in_mesh,
                    BKE_mesh_vert_positions_for_write(psys->hair_in_mesh));
+  BKE_mesh_tag_positions_changed(psys->hair_in_mesh);
 
   /* restore cloth effector weights */
   psys->clmd->sim_parms->effector_weights = clmd_effweights;

source/blender/blenkernel/intern/shrinkwrap.cc

@@ -1547,6 +1547,7 @@ void BKE_shrinkwrap_mesh_nearest_surface_deform(bContext *C, Object *ob_source,
                             -1,
                             BKE_mesh_vert_positions_for_write(src_me),
                             src_me->totvert);
+  BKE_mesh_tag_positions_changed(src_me);
 }
 
 void BKE_shrinkwrap_remesh_target_project(Mesh *src_me, Mesh *target_me, Object *ob_target)