source/blender/depsgraph/intern/builder/deg_builder.cc

@@ -21,6 +21,7 @@
 #include "BLI_utildefines.h"
 
 #include "BKE_action.h"
+#include "BKE_collection.h"
 
 #include "RNA_prototypes.h"
 
@@ -183,6 +184,14 @@ void deg_graph_build_finalize(Main *bmain, Depsgraph *graph)
         flag |= ID_RECALC_NTREE_OUTPUT;
       }
     }
+    else {
+      /* Collection content might have changed (children collection might have been added or
+       * removed from the graph based on their inclusion and visibility flags). */
+      const ID_Type id_type = GS(id_node->id_cow->name);
+      if (id_type == ID_GR) {
+        BKE_collection_object_cache_free(reinterpret_cast<Collection *>(id_node->id_cow));
+      }
+    }
     /* Restore recalc flags from original ID, which could possibly contain recalc flags set by
      * an operator and then were carried on by the undo system. */
     flag |= id_orig->recalc;