diff --git a/src/components/MultiSelectToolbar.tsx b/src/components/MultiSelectToolbar.tsx
index ef9c57ac..132883e7 100644
--- a/src/components/MultiSelectToolbar.tsx
+++ b/src/components/MultiSelectToolbar.tsx
@@ -22,6 +22,11 @@ export function MultiSelectToolbar() {
     [selectedNodes]
   );
 
+  const hasSelectedRegularNode = useMemo(
+    () => selectedNodes.some((node) => node.type !== "group"),
+    [selectedNodes]
+  );
+
   // Check if any selected nodes are in a group
   const selectedNodeGroups = useMemo(() => {
     const groupIds = new Set(selectedNodes.map((n) => n.groupId).filter(Boolean));
@@ -150,7 +155,9 @@ export function MultiSelectToolbar() {
     removeNodesFromGroup(nodeIds);
   };
 
-  if (!toolbarPosition || selectedNodes.length < 2) return null;
+  const shouldHideForRegroupIntent = hasSelectedGroupNode && hasSelectedRegularNode;
+
+  if (!toolbarPosition || selectedNodes.length < 2 || shouldHideForRegroupIntent) return null;
 
   return (
     <div
diff --git a/src/components/__tests__/MultiSelectToolbar.test.tsx b/src/components/__tests__/MultiSelectToolbar.test.tsx
index eba34015..67f4b1f6 100644
--- a/src/components/__tests__/MultiSelectToolbar.test.tsx
+++ b/src/components/__tests__/MultiSelectToolbar.test.tsx
@@ -403,7 +403,7 @@ describe("MultiSelectToolbar", () => {
       expect(mockCreateGroup).toHaveBeenCalledWith(["node-1", "node-2"]);
     });
 
-    it("should show create group button when a selected group is included", () => {
+    it("should not render when selected nodes include a group and regular nodes", () => {
       mockUseWorkflowStore.mockImplementation((selector) => {
         return selector(createDefaultState({
           nodes: [
@@ -418,17 +418,15 @@ describe("MultiSelectToolbar", () => {
         }));
       });
 
-      render(
+      const { container } = render(
         <TestWrapper>
           <MultiSelectToolbar />
         </TestWrapper>
       );
 
-      const createGroupButton = screen.getByTitle("创建分组");
-      fireEvent.click(createGroupButton);
-
+      expect(container.firstChild).toBeNull();
+      expect(screen.queryByTitle("创建分组")).not.toBeInTheDocument();
       expect(screen.queryByTitle("从分组中移除")).not.toBeInTheDocument();
-      expect(mockCreateGroup).toHaveBeenCalledWith(["group-node-group-1", "node-3"]);
     });
 
     it("should show ungroup button when selected nodes are in a group", () => {
diff --git a/src/components/composer/GenerationComposer.tsx b/src/components/composer/GenerationComposer.tsx
index 05651351..2f073213 100644
--- a/src/components/composer/GenerationComposer.tsx
+++ b/src/components/composer/GenerationComposer.tsx
@@ -12,10 +12,9 @@ import {
   type MouseEvent,
   type ReactNode,
 } from "react";
-import { createPortal } from "react-dom";
 import { CloseOutlined, DownOutlined, FileTextOutlined, RightOutlined } from "@ant-design/icons";
 import { useReactFlow, useViewport, ViewportPortal } from "@xyflow/react";
-import { message, Modal, Popover, Segmented, Tooltip } from "antd";
+import { Dropdown, message, Modal, Popover, Segmented, Tooltip } from "antd";
 import { useProviderApiKeys, useWorkflowStore } from "@/store/workflowStore";
 import { useModelStore } from "@/store/modelStore";
 import {
@@ -2891,49 +2890,74 @@ export function GenerationComposer() {
     return t("composer.describeContent");
   }, [connectedInputs, context.mode, context.selectedCount, isEaseCurveNode, isVideoStitchNode, promptForSubmit, t]);
 
+  useEffect(() => {
+    if (shouldRenderInlineComposer) return;
+    assistTriggerIndexRef.current = null;
+    setAssistMenu(null);
+    setAssistMenuPosition(null);
+  }, [shouldRenderInlineComposer]);
+
   const hideComposerForModal = isModalOpen && !modelDialogOpen;
-  const assistMenuOverlay = assistMenu && assistMenuPosition && typeof document !== "undefined"
-    ? createPortal(
-      <div
-        className="fixed z-[10080] w-72 overflow-hidden rounded-xl border border-neutral-700 bg-neutral-800 shadow-2xl shadow-black/40"
-        style={{
-          left: assistMenuPosition.left,
-          top: assistMenuPosition.top,
-          transform: "translateY(-100%)",
+  const assistMenuOverlay = assistMenu && assistMenuPosition
+    ? (
+      <Dropdown
+        open
+        onOpenChange={(nextOpen) => {
+          if (nextOpen) return;
+          assistTriggerIndexRef.current = null;
+          setAssistMenu(null);
+          setAssistMenuPosition(null);
         }}
-        onPointerDownCapture={stopCanvasEvent}
-        onMouseDownCapture={stopCanvasEvent}
-        onClick={stopCanvasEvent}
-        onWheelCapture={stopCanvasEvent}
+        trigger={["click"]}
+        placement="top"
+        overlayClassName="z-[10080]"
+        menu={{ items: [] }}
+        popupRender={() => (
+          <div
+            className="w-72 overflow-hidden rounded-xl border border-neutral-700 bg-neutral-800 shadow-2xl shadow-black/40"
+            onPointerDownCapture={stopCanvasEvent}
+            onMouseDownCapture={stopCanvasEvent}
+            onClick={stopCanvasEvent}
+            onWheelCapture={stopCanvasEvent}
+          >
+            <div className="border-b border-neutral-700 px-3 py-2 text-[11px] font-medium text-neutral-500">
+              {assistMenu === "command" ? t("composer.commands") : t("composer.referenceMaterials")}
+            </div>
+            <div className="py-1">
+              {activeAssistItems.map((item, itemIndex) => {
+                const isActive = itemIndex === assistMenuActiveIndex;
+                return (
+                  <button
+                    key={item.key}
+                    type="button"
+                    onMouseEnter={() => setAssistMenuActiveIndex(itemIndex)}
+                    onClick={() => selectAssistMenuItem(item)}
+                    className={`flex w-full items-center justify-between gap-2 px-3 py-2 text-left text-xs transition-colors ${isActive
+                        ? "bg-neutral-700 text-neutral-100"
+                        : "text-neutral-300 hover:bg-neutral-700 hover:text-neutral-100"
+                      }`}
+                  >
+                    <span className="flex min-w-0 items-center gap-2">
+                      {item.image && <img src={item.image} alt="" className="h-8 w-8 rounded object-cover" />}
+                      <span className="truncate">{item.label}</span>
+                    </span>
+                    <RightOutlined className="text-neutral-500" />
+                  </button>
+                );
+              })}
+            </div>
+          </div>
+        )}
       >
-        <div className="border-b border-neutral-700 px-3 py-2 text-[11px] font-medium text-neutral-500">
-          {assistMenu === "command" ? t("composer.commands") : t("composer.referenceMaterials")}
-        </div>
-        <div className="py-1">
-          {activeAssistItems.map((item, itemIndex) => {
-            const isActive = itemIndex === assistMenuActiveIndex;
-            return (
-              <button
-                key={item.key}
-                type="button"
-                onMouseEnter={() => setAssistMenuActiveIndex(itemIndex)}
-                onClick={() => selectAssistMenuItem(item)}
-                className={`flex w-full items-center justify-between gap-2 px-3 py-2 text-left text-xs transition-colors ${isActive
-                    ? "bg-neutral-700 text-neutral-100"
-                    : "text-neutral-300 hover:bg-neutral-700 hover:text-neutral-100"
-                  }`}
-              >
-                <span className="flex min-w-0 items-center gap-2">
-                  {item.image && <img src={item.image} alt="" className="h-8 w-8 rounded object-cover" />}
-                  <span className="truncate">{item.label}</span>
-                </span>
-                <RightOutlined className="text-neutral-500" />
-              </button>
-            );
-          })}
-        </div>
-      </div>,
-      document.body
+        <div
+          aria-hidden="true"
+          className="pointer-events-none fixed z-[10080] h-px w-72"
+          style={{
+            left: assistMenuPosition.left,
+            top: assistMenuPosition.top,
+          }}
+        />
+      </Dropdown>
     )
     : null;
 
diff --git a/src/components/nodes/GroupNode.tsx b/src/components/nodes/GroupNode.tsx
index 52a0d18a..837baf91 100644
--- a/src/components/nodes/GroupNode.tsx
+++ b/src/components/nodes/GroupNode.tsx
@@ -10,7 +10,7 @@ import {
   Position,
 } from "@xyflow/react";
 import { DownloadOutlined } from "@ant-design/icons";
-import { Modal } from "antd";
+import { Dropdown, Modal, Popover, type MenuProps } from "antd";
 import { useI18n } from "@/i18n";
 import type { TranslationKey } from "@/i18n";
 import { GROUP_COLORS, useWorkflowStore } from "@/store/workflowStore";
@@ -60,11 +60,10 @@ export function GroupNode({ id, data, selected }: NodeProps<GroupNodeType>) {
   const imageRefBasePath = useWorkflowStore((state) => state.imageRefBasePath ?? null);
   const [isEditing, setIsEditing] = useState(false);
   const [editName, setEditName] = useState(group?.name || "");
-  const [activePopover, setActivePopover] = useState<"color" | "layout" | null>(null);
+  const [colorPopoverOpen, setColorPopoverOpen] = useState(false);
   const [isDownloading, setIsDownloading] = useState(false);
   const [isHovered, setIsHovered] = useState(false);
   const inputRef = useRef<HTMLInputElement>(null);
-  const toolbarRef = useRef<HTMLDivElement>(null);
 
   useEffect(() => {
     if (!isEditing) setEditName(group?.name || "");
@@ -77,18 +76,6 @@ export function GroupNode({ id, data, selected }: NodeProps<GroupNodeType>) {
     }
   }, [isEditing]);
 
-  useEffect(() => {
-    if (!activePopover) return;
-
-    const handleClickOutside = (event: MouseEvent) => {
-      if (toolbarRef.current?.contains(event.target as Node)) return;
-      setActivePopover(null);
-    };
-
-    document.addEventListener("mousedown", handleClickOutside);
-    return () => document.removeEventListener("mousedown", handleClickOutside);
-  }, [activePopover]);
-
   const handleNameSubmit = useCallback(() => {
     const nextName = editName.trim();
     if (nextName && nextName !== group?.name) {
@@ -116,7 +103,6 @@ export function GroupNode({ id, data, selected }: NodeProps<GroupNodeType>) {
       const groupNodes = nodes.filter((node) => node.type !== "group" && node.groupId === groupId);
       if (groupNodes.length < 2) {
         updateGroup(groupId, { layout });
-        setActivePopover(null);
         return;
       }
 
@@ -165,7 +151,6 @@ export function GroupNode({ id, data, selected }: NodeProps<GroupNodeType>) {
 
       updateGroup(groupId, { layout });
       onNodesChange(changes);
-      setActivePopover(null);
     },
     [groupId, nodes, onNodesChange, updateGroup]
   );
@@ -238,6 +223,37 @@ export function GroupNode({ id, data, selected }: NodeProps<GroupNodeType>) {
 
   const bgColor = GROUP_COLORS[group.color];
   const showResizeControls = selected || isHovered;
+  const colorPopoverContent = (
+    <div
+      className="nodrag nopan flex gap-1"
+      onClick={(event) => event.stopPropagation()}
+      onPointerDown={(event) => event.stopPropagation()}
+    >
+      {COLOR_OPTIONS.map(({ color, labelKey }) => (
+        <button
+          key={color}
+          type="button"
+          className={`h-6 w-6 rounded-full border-2 ${group.color === color ? "border-white" : "border-transparent"}`}
+          style={{ backgroundColor: GROUP_COLORS[color] }}
+          title={t(labelKey)}
+          aria-label={t(labelKey)}
+          onClick={(event) => {
+            event.stopPropagation();
+            updateGroup(groupId, { color });
+            setColorPopoverOpen(false);
+          }}
+        />
+      ))}
+    </div>
+  );
+  const layoutMenuItems: MenuProps["items"] = LAYOUT_OPTIONS.map(({ layout, labelKey }) => ({
+    key: layout,
+    label: (
+      <span className="flex min-w-20 items-center gap-3 text-[11px]">
+        <span className="whitespace-nowrap">{t(labelKey)}</span>
+      </span>
+    ),
+  }));
 
   return (
     <>
@@ -250,50 +266,45 @@ export function GroupNode({ id, data, selected }: NodeProps<GroupNodeType>) {
       >
         <div
           className="nodrag nopan relative z-[10050] flex h-12 shrink-0 flex-nowrap items-center justify-center gap-1 rounded-xl border border-neutral-700/80 bg-neutral-800/95 px-3 py-2 shadow-2xl shadow-black/40"
-          ref={toolbarRef}
         >
-          <div className="relative shrink-0">
+          <Popover
+            arrow={false}
+            content={colorPopoverContent}
+            open={colorPopoverOpen}
+            placement="top"
+            trigger="click"
+            onOpenChange={setColorPopoverOpen}
+          >
             <button
               type="button"
               className="nodrag nopan flex h-8 w-8 shrink-0 items-center justify-center rounded text-neutral-400 transition-colors hover:bg-neutral-700 hover:text-neutral-100 focus:outline-none focus:ring-1 focus:ring-neutral-500"
               onClick={(event) => {
                 event.stopPropagation();
-                setActivePopover((current) => (current === "color" ? null : "color"));
               }}
               title={t("group.color")}
               aria-label={t("group.color")}
             >
               <span className="h-4 w-4 rounded-full border border-white/30" style={{ backgroundColor: bgColor }} />
             </button>
-
-            {activePopover === "color" && (
-              <div className="nodrag nopan absolute bottom-[calc(100%+8px)] left-1/2 z-[10060] flex -translate-x-1/2 gap-1 rounded-lg border border-neutral-700/80 bg-neutral-800/95 p-2 shadow-xl shadow-black/30">
-                {COLOR_OPTIONS.map(({ color, labelKey }) => (
-                  <button
-                    key={color}
-                    type="button"
-                    className={`h-6 w-6 rounded-full border-2 ${group.color === color ? "border-white" : "border-transparent"}`}
-                    style={{ backgroundColor: GROUP_COLORS[color] }}
-                    title={t(labelKey)}
-                    aria-label={t(labelKey)}
-                    onClick={(event) => {
-                      event.stopPropagation();
-                      updateGroup(groupId, { color });
-                      setActivePopover(null);
-                    }}
-                  />
-                ))}
-              </div>
-            )}
-          </div>
-
-          <div className="relative shrink-0">
+          </Popover>
+
+          <Dropdown
+            trigger={["click"]}
+            placement="top"
+            menu={{
+              items: layoutMenuItems,
+              selectedKeys: group.layout ? [group.layout] : [],
+              onClick: ({ key, domEvent }) => {
+                domEvent.stopPropagation();
+                handleApplyLayout(key as GroupLayout);
+              },
+            }}
+          >
             <button
               type="button"
               className="nodrag nopan flex h-8 w-[92px] shrink-0 items-center justify-center gap-1 rounded px-2 text-[11px] font-medium text-neutral-400 transition-colors hover:bg-neutral-700 hover:text-neutral-100 focus:outline-none focus:ring-1 focus:ring-neutral-500"
               onClick={(event) => {
                 event.stopPropagation();
-                setActivePopover((current) => (current === "layout" ? null : "layout"));
               }}
               title={t("group.layout")}
               aria-label={t("group.layout")}
@@ -310,25 +321,7 @@ export function GroupNode({ id, data, selected }: NodeProps<GroupNodeType>) {
               </svg>
             </button>
 
-            {activePopover === "layout" && (
-              <div className="nodrag nopan absolute bottom-[calc(100%+8px)] left-1/2 z-[10060] w-28 -translate-x-1/2 rounded-lg border border-neutral-700/80 bg-neutral-800/95 py-1 shadow-xl shadow-black/30">
-                {LAYOUT_OPTIONS.map(({ layout, labelKey }) => (
-                  <button
-                    key={layout}
-                    type="button"
-                    className="flex w-full items-center px-3 py-1.5 text-left text-[11px] text-neutral-300 transition-colors hover:bg-neutral-700 hover:text-neutral-100"
-                    onClick={(event) => {
-                      event.stopPropagation();
-                      handleApplyLayout(layout);
-                    }}
-                  >
-                    <span className="whitespace-nowrap">{t(labelKey)}</span>
-                    {group.layout === layout && <span className="ml-auto text-neutral-100">✓</span>}
-                  </button>
-                ))}
-              </div>
-            )}
-          </div>
+          </Dropdown>
 
           <button
             type="button"