Components transition `enter` function not called when using Vue version 2.6.10

[katerlouis]

Version

3.8.4

Reproduction link

https://github.com/katerlouis/vue-2610-bug

Environment info

 System:
    OS: macOS High Sierra 10.13.6
    CPU: (8) x64 Intel(R) Core(TM) i7-4960HQ CPU @ 2.60GHz
  Binaries:
    Node: 11.15.0 - ~/.nvm/versions/node/v11.15.0/bin/node
    Yarn: Not Found
    npm: 6.9.2 - ~/.nvm/versions/node/v11.15.0/bin/npm
  Browsers:
    Chrome: 75.0.3770.100
    Firefox: 67.0.4
    Safari: 12.1.1
  npmPackages:
    @vue/babel-helper-vue-jsx-merge-props:  1.0.0
    @vue/babel-plugin-transform-vue-jsx:  1.0.0
    @vue/babel-preset-app:  3.8.0
    @vue/babel-preset-jsx:  1.0.0
    @vue/babel-sugar-functional-vue:  1.0.0
    @vue/babel-sugar-inject-h:  1.0.0
    @vue/babel-sugar-v-model:  1.0.0
    @vue/babel-sugar-v-on:  1.0.0
    @vue/cli-overlay:  3.8.0
    @vue/cli-plugin-babel: ^3.8.0 => 3.8.0
    @vue/cli-plugin-eslint: ^3.8.0 => 3.8.0
    @vue/cli-service: ^3.8.4 => 3.8.4
    @vue/cli-shared-utils:  3.8.0
    @vue/component-compiler-utils:  2.6.0
    @vue/preload-webpack-plugin:  1.1.0
    @vue/web-component-wrapper:  1.2.0
    eslint-plugin-vue:  undefined (4.7.1)
    vue: ^2.6.10 => 2.6.10
    vue-eslint-parser:  2.0.3
    vue-hot-reload-api:  2.3.3
    vue-loader:  15.7.0
    vue-style-loader:  4.1.2
    vue-template-compiler: ^2.6.10 => 2.6.10
    vue-template-es2015-compiler:  1.9.1
    vuex: ^3.1.1 => 3.1.1
  npmGlobalPackages:
    @vue/cli: 3.8.4

Steps to reproduce

serve or build the app
and press the toggle button

What is expected?

HelloWorld component should call enter function

What is actually happening?

HelloWorld component doesn't call enter function

---

enter of the transition directly inside App.vue (the logo img) gets called though, which is odd.
With vue v2.5.17 it works as expected (haven't used any other vue version since)

[LinusBorg]

Hi @katerlouis

If it's dependent on the Vue version it seems it's an issue with Vue itself, not Vue CLI.

Can you please reopen the issue in that repo? Thanks.

[zrh122]

maybe this can help you. @katerlouis

[katerlouis]

Reopened the issue here:
vuejs/vue#10227

@zrh122 I decided to keep using 2.5.17 until this is fixed.