Version

2.4.1

Reproduction link

https://github.com/totzcc/weex-tabbar/tree/bugreport

Steps to reproduce

1. First you must set up Weex Development Environment
2. clone project and *** switch to bugreport branch ***, and run it

git clone https://github.com/totzcc/weex-tabbar.git
git checkout bugreport
cnpm install
./start

3. visit http://localhost:12580/web on chrome and click mobile device toolbar in web developer Tools
4. click tab1 text

What is expected?

The click function will be call twice

What is actually happening?

only call once

It's work at Vue 2.3.4.

Today I reinstall package.json, It auto upgrade to 2.4.1

I modify web/index.html script to be reproduce my problem

<script src="https://cdn.bootcss.com/vue/2.4.1/vue.runtime.min.js" type="text/javascript" charset="utf-8"></script>

You can use this code to compare these two differences

<script src="https://cdn.bootcss.com/vue/2.3.4/vue.runtime.min.js" type="text/javascript" charset="utf-8"></script>