Cannot read property '$vnode' of null'

[blalan]

Version

2.5.18-beta.0

Reproduction link

https://codesandbox.io/s/4l9xo6zz9

Steps to reproduce

Change hour in timepicker to a future hour, making the validation fail and error message to appear.

What is expected?

Finish being able to select hour/minutes and see error on text-field

What is actually happening?

Console error logged, app because non-responsive until manual refresh.

---

This is a regression, works fine in 2.5.17. @KaelWD thinks this has to do with the transition on the error message element. He referenced this commit: f43ce3a

[jvbianchi]

The same error happens in this issue: vuetifyjs/vuetify#5819

[posva]

Please do not include other libraries when reporting bugs. We cannot dive in other libs. If you manage to boil it down without vuetify, please open a new issue

[jacekkarczmarczyk]

@posva https://codepen.io/anon/pen/OaeWWY?editors=0012

Edit: opened a new issue #9151