From bbe2247c9a1747581b569287c4d2a43475bfde82 Mon Sep 17 00:00:00 2001
From: liaoxuezhi <liaoxuezhi@baidu.com>
Date: Thu, 18 Jul 2019 18:55:47 +0800
Subject: [PATCH] =?UTF-8?q?=E4=B8=8D=E8=83=BD=E7=9B=B4=E6=8E=A5=E4=BF=AE?=
 =?UTF-8?q?=E6=94=B9=E5=8E=9F=E5=A7=8B=E9=85=8D=E7=BD=AE?=
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---
 src/renderers/Form/Table.tsx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/renderers/Form/Table.tsx b/src/renderers/Form/Table.tsx
index 6a9b7649..0332626c 100644
--- a/src/renderers/Form/Table.tsx
+++ b/src/renderers/Form/Table.tsx
@@ -329,7 +329,7 @@ export default class FormTable extends React.Component<TableProps, TableState> {
 
     buildColumns(props:TableProps, isCreateMode = false):Array<any> {
         const env = this.props.env;
-        let columns:Array<any> = Array.isArray(props.columns) ? props.columns : [];
+        let columns:Array<any> = Array.isArray(props.columns) ? props.columns.concat() : [];
         const ns = this.props.classPrefix;
 
         let btns = [];