diff --git a/api/core/workflow/graph/graph.py b/api/core/workflow/graph/graph.py
index c1a7e43b3e..ba5a01fc94 100644
--- a/api/core/workflow/graph/graph.py
+++ b/api/core/workflow/graph/graph.py
@@ -130,15 +130,12 @@ class Graph:
 
     @classmethod
     def _build_edges(
-        cls,
-        edge_configs: list[dict[str, object]],
-        valid_node_ids: set[str] | None = None,
+        cls, edge_configs: list[dict[str, object]]
     ) -> tuple[dict[str, Edge], dict[str, list[str]], dict[str, list[str]]]:
         """
         Build edge objects and mappings from edge configurations.
 
         :param edge_configs: list of edge configurations
-        :param valid_node_ids: optional set of valid node IDs to filter edges
         :return: tuple of (edges dict, in_edges dict, out_edges dict)
         """
         edges: dict[str, Edge] = {}
@@ -308,16 +305,7 @@ class Graph:
         if not node_configs:
             raise ValueError("Graph must have at least one node")
 
-        # Filter out UI-only nodes that should not participate in workflow execution
-        # Check both node.type (ReactFlow type) and node.data.type (business type)
-        ui_only_node_types = {"custom-note"}
-        ui_only_data_types = {"group"}
-        node_configs = [
-            node_config
-            for node_config in node_configs
-            if node_config.get("type", "") not in ui_only_node_types
-            and node_config.get("data", {}).get("type", "") not in ui_only_data_types
-        ]
+        node_configs = [node_config for node_config in node_configs if node_config.get("type", "") != "custom-note"]
 
         # Parse node configurations
         node_configs_map = cls._parse_node_configs(node_configs)
diff --git a/web/app/components/workflow/custom-group-node/custom-group-exit-port-node.tsx b/web/app/components/workflow/custom-group-node/custom-group-exit-port-node.tsx
index 45af811618..fda7cab63d 100644
--- a/web/app/components/workflow/custom-group-node/custom-group-exit-port-node.tsx
+++ b/web/app/components/workflow/custom-group-node/custom-group-exit-port-node.tsx
@@ -4,7 +4,7 @@ import type { FC } from 'react'
 import { memo } from 'react'
 import { Handle, Position } from 'reactflow'
 import type { CustomGroupExitPortNodeData } from './types'
-import cn from '@/utils/classnames'
+import { cn } from '@/utils/classnames'
 
 type CustomGroupExitPortNodeProps = {
   id: string
diff --git a/web/app/components/workflow/custom-group-node/custom-group-input-node.tsx b/web/app/components/workflow/custom-group-node/custom-group-input-node.tsx
index 18af6f698d..90e840c472 100644
--- a/web/app/components/workflow/custom-group-node/custom-group-input-node.tsx
+++ b/web/app/components/workflow/custom-group-node/custom-group-input-node.tsx
@@ -4,7 +4,7 @@ import type { FC } from 'react'
 import { memo } from 'react'
 import { Handle, Position } from 'reactflow'
 import type { CustomGroupInputNodeData } from './types'
-import cn from '@/utils/classnames'
+import { cn } from '@/utils/classnames'
 
 type CustomGroupInputNodeProps = {
   id: string
diff --git a/web/app/components/workflow/custom-group-node/custom-group-node.tsx b/web/app/components/workflow/custom-group-node/custom-group-node.tsx
index f41eb4bad3..9d137a36c6 100644
--- a/web/app/components/workflow/custom-group-node/custom-group-node.tsx
+++ b/web/app/components/workflow/custom-group-node/custom-group-node.tsx
@@ -4,7 +4,7 @@ import type { FC } from 'react'
 import { memo } from 'react'
 import { Handle, Position } from 'reactflow'
 import type { CustomGroupNodeData } from './types'
-import cn from '@/utils/classnames'
+import { cn } from '@/utils/classnames'
 
 type CustomGroupNodeProps = {
   id: string
diff --git a/web/app/components/workflow/nodes/group/node.tsx b/web/app/components/workflow/nodes/group/node.tsx
index 0d59b3fbb5..0d891d69dd 100644
--- a/web/app/components/workflow/nodes/group/node.tsx
+++ b/web/app/components/workflow/nodes/group/node.tsx
@@ -4,7 +4,7 @@ import BlockIcon from '@/app/components/workflow/block-icon'
 import type { NodeProps } from '@/app/components/workflow/types'
 import type { GroupHandler, GroupMember, GroupNodeData } from './types'
 import type { BlockEnum } from '@/app/components/workflow/types'
-import cn from '@/utils/classnames'
+import { cn } from '@/utils/classnames'
 
 const MAX_MEMBER_ICONS = 12