[Bug Report] v-autocomplete reopens if items updated while in focus

[Kasheftin]

Versions and Environment

Vuetify: 1.1.10
Vue: 2.5.17
Browsers: Chrome 65.0.3325.162
OS: Linux x86_64

Steps to reproduce

• Type 'ala' into the v-autocomplete box;
• Press down arrow, then enter to select the first result;

Expected Behavior

Value should be selected, then the autocomplete list should be hidden and do not appear again.

Actual Behavior

Autocomplete list disappears and then reopens.

Reproduction Link

https://codepen.io/kasheftin/pen/djwYrO

Other comments

That's the slightly modified code from this example, https://github.com/vuetifyjs/vuetifyjs.com/blob/master/src/examples/autocompletes/asynchronous.vue. The last has strange restriction in watch handler (val && val !== this.select && this.querySelections(val)) it's not acceptable if the component uses return-object or when it should show preliminary results for the empty search. Anyway, reassigning the items property should now open the list.

[KaelWD]

Duplicate of #4663