Properties defined on an Array are not unwrapped in template

[ByScripts]

Version

3.0.0-rc.5

Reproduction link

https://codepen.io/ByScripts/pen/YzqwEER

Steps to reproduce

<template>
    <pre>{{ obj.prop }}</pre>
    <pre>{{ arr.prop }}</pre>
</template>

<script>
    setup() {
        let obj = {};
        obj.prop = ref("obj prop");

        let arr = [];
        arr.prop = ref("arr prop");

        return reactive({ obj, arr });
    }
</script>

What is expected?

Both prop properties should be unwrapped

What is actually happening?

Only the object prop is unwrapped. The array prop is not.

[Picknight]

See #1682