QSelect show undefined on clear

[JoseMancebo]

Software version

Quasar: 0.17.10
OS: Windows
Browsers: IE,Edge,Chrome (tested)

Codepen with reproducible issue

https://codepen.io/josemancebo/pen/aaZQJp

What did you get as the error?

When you clear the selection on a QSelect, this shows undefined.

What were you expecting?

When you clear the selection on a QSelect, it will appear empty.

What steps did you take, to get the error?

On codepen sample:
1- Select an option
2- Clear selection with the clear button.

[rstoenescu]

Thanks for reporting this regression. Fix will be available in Quasar v0.17.11