From 7c0e30ca8486d53d693f21b0339adea940c176db Mon Sep 17 00:00:00 2001
From: Wendell <wendzhue@gmail.com>
Date: Wed, 5 Jun 2019 15:38:42 +0800
Subject: [PATCH] fix(module:cascader): fix reset trigger redraw (#3481)

close #3480
---
 components/cascader/nz-cascader.service.ts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/components/cascader/nz-cascader.service.ts b/components/cascader/nz-cascader.service.ts
index da4c492d047..fcbf0a838e8 100644
--- a/components/cascader/nz-cascader.service.ts
+++ b/components/cascader/nz-cascader.service.ts
@@ -130,6 +130,8 @@ export class NzCascaderService implements OnDestroy {
     this.selectedOptions = [];
 
     if (first && this.cascaderComponent.nzLoadData && !hasValue) {
+      // Should also notify the component that value changes. Fix #3480.
+      this.$redraw.next();
       return;
     } else {
       initColumnWithIndex(0);