Sculpt: Fix mask from cavity not redrawing viewport with modifiers

source/blender/draw/engines/eevee/eevee_materials.c

@@ -812,6 +812,10 @@ void EEVEE_materials_cache_populate(EEVEE_Data *vedata,
   bool use_sculpt_pbvh = BKE_sculptsession_use_pbvh_draw(ob, draw_ctx->v3d) &&
                          !DRW_state_is_image_render();
 
+  if (ob->sculpt && ob->sculpt->pbvh) {
+    BKE_pbvh_is_drawing_set(ob->sculpt->pbvh, use_sculpt_pbvh);
+  }
+
   /* First get materials for this mesh. */
   if (ELEM(ob->type, OB_MESH, OB_SURF)) {
     const int materials_len = DRW_cache_object_material_count_get(ob);

source/blender/editors/sculpt_paint/sculpt_ops.c

@@ -1116,10 +1116,7 @@ static int sculpt_bake_cavity_exec(bContext *C, wmOperator *op)
   SCULPT_undo_push_end(ob);
 
   SCULPT_flush_update_done(C, ob, SCULPT_UPDATE_MASK);
-
-  /* Unlike other operators we do not tag the ID for update here;
-   * it triggers a PBVH rebuild which is too slow and ruins
-   * the interactivity of the tool. */
+  SCULPT_tag_update_overlays(C);
 
   return OPERATOR_FINISHED;
 }