Version

2.6.10

Reproduction link

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

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)