fix: align with shadow (#395)

Author: zombieJ

package.json

@@ -66,7 +66,7 @@
     "rc-align": "^4.0.0",
     "rc-motion": "^2.0.0",
     "rc-resize-observer": "^1.3.1",
-    "rc-util": "^5.31.1"
+    "rc-util": "^5.33.0"
   },
   "peerDependencies": {
     "react": ">=16.9.0",

src/index.tsx

@@ -336,13 +336,11 @@ export function generateTrigger(
 
     // ========================== Motion ============================
     const [inMotion, setInMotion] = React.useState(false);
-    const mountRef = React.useRef(true);
 
-    useLayoutEffect(() => {
-      if (!mountRef.current || mergedOpen) {
+    useLayoutEffect((firstMount) => {
+      if (!firstMount || mergedOpen) {
         setInMotion(true);
       }
-      mountRef.current = true;
     }, [mergedOpen]);
 
     const [motionPrepareResolve, setMotionPrepareResolve] =