v2.6.3
Falsey index values do not display the proper label when selected:

<v-select index="value" :options="options" v-model="selected"></v-select>
Repro: https://codepen.io/sagalbot/pen/PLMOgo
Related #705
Same problem is in 3.x. Still not fixed.
3.1.0 version codepen: https://codepen.io/anon/pen/zQqMeG
Thanks for reporting @ipa1981! Two bug fixes for reduce coming in 3.1.1.
@sagalbot No problem. Any plans to release 3.1.1 soon?
fixed. check PR.