Vuetify: [Bug Report] Attach menu from v-select with menu-props not working

[sarahtheflame]

Versions and Environment

Vuetify: 1.5.14
Vue: 2.6.10
Browsers: Chrome 74.0.3729.169
OS: Windows 10

Steps to reproduce

1. Insert a v-select
2. Create a div with an id
3. Add this attribute to the v-select: :menu-props="{ attach: '#yourId' }"
4. Inspect DOM to locate the menu: it is at the application root instead of inside the div with the id

Expected Behavior

The menu generated by v-select should be a child of the div with the id

Actual Behavior

The menu is attached to the root element of the Vue app

Reproduction Link

https://codepen.io/sarahtheflame/pen/MMyzPb

Other comments

I included a basic menu in the codepen with the expected functionality. The attach property works in a simple menu, but not when passed from a v-select by menu-props

[jacekkarczmarczyk]

Workaround: https://codepen.io/anon/pen/pXNXWq

[alex-lit]

Same bug on Vuetify 2.3.14

[C0Nd3Mnd]

Same with <v-autocomplete>, passing menu-items ignores the attach prop.

[arawwad0]

just pass the attach prop to the component(v-select or v-autocomplete), it works for me. It messes up the menu styles but could be fixed

[jsmedmar]

the prop content-class is also not being passed to the menu.