fix recursion error

core/nodeslicer/bpy_ns_types.py

@@ -5,6 +5,8 @@ from . import tree
 
 def notify_tree_changed(self, context):
     from . import tree
+    if tree._is_updating:
+        return
     tree._tree_changed = True
 
     node = None

core/nodeslicer/tree.py

@@ -12,9 +12,11 @@ if TYPE_CHECKING:
 def get_referenced_objects(node, visited=None):
     if visited is None:
         visited = set()
-    if node in visited:
+    
+    ptr = node.as_pointer()
+    if ptr in visited:
         return set()
-    visited.add(node)
+    visited.add(ptr)
 
     objs = set()
     # Check all input sockets for objects
@@ -42,7 +44,7 @@ _is_updating = False
 _tree_changed = False
 
 def tree_update_handler(scene, depsgraph):
-    global _tree_changed
+    global _tree_changed, _is_updating
 
     # Names of objects that have changed
     updated_object_names = {update.id.name for update in depsgraph.updates if isinstance(update.id, bpy.types.Object)}
@@ -51,7 +53,7 @@ def tree_update_handler(scene, depsgraph):
     updated_meshes = {update.id.name for update in depsgraph.updates if isinstance(update.id, bpy.types.Mesh)}
     if updated_meshes:
         for obj in bpy.data.objects:
-            if obj.type == 'MESH' and obj.data in updated_meshes:
+            if obj.type == 'MESH' and obj.data.name in updated_meshes:
                 updated_object_names.add(obj.name)
 
     # Note: custom NodeTree updates often don't appear in depsgraph.updates