v-model returns null for options array of object data

[aqordeon]

The documentation for this link is not work: https://vue-multiselect.js.org/#sub-single-select-object

I have followed the exact code but the result is not the same as what showed in the documentation. The v-model value always returns null data and all options are checked.

Expected behaviour

v-model returns the selected option object data and only the selected option is checked

Actual behaviour

v-model returns null data and all options are checked

Dependencies:
Vue 3.2
Multiselect 2.6.2