From e0c74501f4ba91fbdc19f1ddeea1c110da2bc8bc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BE=90=E6=96=B0=E8=88=AA?= <xuxinhang@bytedance.com>
Date: Thu, 20 Dec 2018 15:13:10 +0800
Subject: [PATCH] feat: The <Affix> run update-position when first mounted, to
 get the actual styles.

---
 components/affix/index.tsx | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/components/affix/index.tsx b/components/affix/index.tsx
index ce880527d3..88530d5514 100644
--- a/components/affix/index.tsx
+++ b/components/affix/index.tsx
@@ -218,6 +218,8 @@ export default class Affix extends React.Component<AffixProps, AffixState> {
     // Wait for parent component ref has its value
     this.timeout = setTimeout(() => {
       this.setTargetEventListeners(target);
+      // Mock Event object.
+      this.updatePosition({} as Event);
     });
   }