[Bug Report] v-dialog doesn't display slot if slot is rendered later

[Chovin]

Environment

Vuetify Version: 2.1.4
Vue Version: 2.6.10
Browsers: Chrome 77.0.3865.90
OS: Mac OS 10.14.6

Steps to reproduce

use v-dialog with an activator slot that is rendered after v-dialog renders

Expected Behavior

slot is visible

Actual Behavior

slot is rendered as a child of the v-dialog DOM element, making it not visible

Reproduction Link

https://codesandbox.io/s/vue-template-8vd6g

Other comments

trying to toggle between two buttons that open their corresponding dialogs: https://codesandbox.io/s/vue-template-25evs (use for this makes more sense when the v-dialogs are their own custom components)

trying that same thing in 2.0.20 https://codesandbox.io/s/vue-template-1uu87
it works until you try to login again. the login button never reappears.

[mandaputtra]

Why is this won't be fixed? Is there any way ti implement this?

[lioneaglesolutions]

This issue is being closed due to inactivity. If this is still present in the latest version, please submit a new issue with a reproduction.

If you have any additional questions, please reach out to us in our [Discord community](https://community.vuetifyjs.com/).