diff --git a/package.json b/package.json
index 7df3220d..91fe4b96 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
     "docs:build": "dumi build",
     "docs:deploy": "gh-pages -d .doc",
     "compile": "father build && lessc assets/index.less assets/index.css",
-    "prepublishOnly": "npm run compile && np --yolo --no-publish",
+    "prepublishOnly": "npm run compile && np --yolo --no-publish --any-branch",
     "lint": "eslint src/ --ext .tsx,.ts,.jsx,.js",
     "test": "father test",
     "coverage": "father test --coverage",
diff --git a/src/SubMenu.tsx b/src/SubMenu.tsx
index b44ac2da..92ac0a77 100644
--- a/src/SubMenu.tsx
+++ b/src/SubMenu.tsx
@@ -454,9 +454,10 @@ export class SubMenu extends React.Component<SubMenuProps, SubMenuState> {
       forceSubMenuRender: props.forceSubMenuRender,
       triggerSubMenuAction: props.triggerSubMenuAction,
       builtinPlacements: props.builtinPlacements,
-      defaultActiveFirst: props.store.getState().defaultActiveFirst[
-        getMenuIdFromSubMenuEventKey(props.eventKey)
-      ],
+      defaultActiveFirst:
+        props.store.getState().defaultActiveFirst[
+          getMenuIdFromSubMenuEventKey(props.eventKey)
+        ],
       multiple: props.multiple,
       prefixCls: props.rootPrefixCls,
       id: this.internalMenuId,
@@ -528,7 +529,11 @@ export class SubMenu extends React.Component<SubMenuProps, SubMenuState> {
     }
 
     return (
-      <CSSMotion visible={baseProps.visible} {...mergedMotion}>
+      <CSSMotion
+        visible={baseProps.visible}
+        forceRender={forceSubMenuRender}
+        {...mergedMotion}
+      >
         {({ className, style }) => {
           const mergedClassName = classNames(sharedClassName, className);
 
diff --git a/src/util.ts b/src/util.ts
index 9f1ab844..381612c8 100644
--- a/src/util.ts
+++ b/src/util.ts
@@ -48,10 +48,9 @@ export function loopMenuItemRecursively(
   }
   React.Children.forEach(children, (c: React.ReactElement) => {
     if (c) {
-      const construct = c.type as
-        | typeof MenuItemGroup
-        | typeof MenuItem
-        | typeof SubMenu;
+      const construct = c.type as typeof MenuItemGroup &
+        typeof MenuItem &
+        typeof SubMenu;
       if (
         !construct ||
         !(
diff --git a/src/utils/isMobile.ts b/src/utils/isMobile.ts
index d70203ff..24279de0 100644
--- a/src/utils/isMobile.ts
+++ b/src/utils/isMobile.ts
@@ -25,7 +25,7 @@ function isMobile(userAgent?: string) {
 
   // Facebook mobile app's integrated browser adds a bunch of strings that
   // match everything. Strip it out if it exists.
-  let tmp = ua.split('[FBAN');
+  let tmp = (ua || '').split('[FBAN');
   if (typeof tmp[1] !== 'undefined') {
     [ua] = tmp;
   }