The [bug report] checkbox group change event could not get the value correctly

[chess99]

Element UI version

2.13.0

OS/Browsers version

chrome Version 78.0.3904.108

Vue version

2.6.10

Reproduction Link

https://codepen.io/chess126/pen/rNaeNYb?&editable=true

Steps to reproduce

点击一个checkbox

What is Expected?

:value写法也能正常获取更新后的值

What is actually happening?

v-model写法, change事件可以获取更新后的值; :value写法, 无法获取更新后的值

[element-bot]

Translation of this issue:

Element UI version

2.13.0

OS/Browsers version

chrome Version 78.0.3904.108

Vue version

2.6.10

Reproduction Link

https://codepen.io/chess126/pen/rNaeNYb?&editable=true

Steps to reproduce

Click on a checkbox

What is Expected?

: value writing can also get the updated value normally

What is actually happening?

V-model, the change event can get the updated value;

: value write method, unable to get the updated value

[EchoZhaoH]

牛逼，没人修

[lqzhgood]

=.= 一年了... 能 合并 上去么

[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.