[bug report] cascade selector, lazload status echo, reassignment echo failed after more than 1 second, no problem within one second

[yuan1]

Element UI version

2.12.0

OS/Browsers version

Mac/Chrome版本 77.0.3865.120（正式版本）

Vue version

2.6.10

Reproduction Link

https://codepen.io/hua2/pen/jOOBVZw?editors=1111

Steps to reproduce

created 后模拟 2秒后进行重新赋值

What is Expected?

无论何时重新赋值都进行lazyload 回显

What is actually happening?

一秒内没问题，超过一秒不进行回显

[element-bot]

Translation of this issue:

###Element UI version 2.12.0

###OS / browsers version MAC / Chrome version 77.0.3865.120 (official)

###Vue version 2.6.10

###Reproduction link HTTPS: / / codepen. IO / HUA2 / pen / joobvzw? Editors = 1111

###Steps to reproduce After created, simulate for 2 seconds and then reassign.

###What is expected? Lazyload echo whenever reassigned

###What is actually happening? No problem in one second, no echo after one second

[yuan1]

重新调用 this.$refs.cascader.panel.lazyLoad() 可进行回显

[zmy122177638]

直到今天还是无法回显

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[personwyr]

“重新调用 this.$refs.cascader.panel.lazyLoad() 可进行回显” 多刷新几次页面还会出现不显示问题