优化判断逻辑

src/components/Drawer.tsx

@@ -115,15 +115,15 @@ export class Drawer extends React.Component<DrawerProps, DrawerState> {
     const isLeftButton =
       (e.button === 1 && window.event !== null) || e.button === 0;
 
-    this.isRootClosed =
-      !!(
-        isLeftButton &&
-        closeOnOutside &&
-        target &&
-        this.modalDom &&
-        !this.modalDom.contains(target) &&
-        !target.closest('[role=dialog]')
-      ) || target.matches(`.${ns}Drawer-overlay.in`); // 干脆过滤掉来自弹框里面的点击
+    this.isRootClosed = !!(
+      isLeftButton &&
+      closeOnOutside &&
+      target &&
+      this.modalDom &&
+      ((!this.modalDom.contains(target) && !target.closest('[role=dialog]')) ||
+        (target.matches(`.${ns}Drawer-overlay`) &&
+          target.parentElement === this.modalDom))
+    ); // 干脆过滤掉来自弹框里面的点击
   }
 
   @autobind