Invalid template ref type using template tag with v-if

[exodusanto]

Version

3.0.0-alpha.4

Reproduction link

http://none.sorry

Steps to reproduce

In my root component i have this code:

<template>
  <div>
    <template v-if="isDesktop">
      You are on desktop view
    </template>
    <template v-else-if="isTablet">
      You are on tablet
    </template>
  </div>
</template>
<script>
...

What is expected?

isDesktop and isTablet are refs updated at window resize.
In any window size I can't see either of them
If I use a div instead it works

What is actually happening?

In console

[Vue warn]: Invalid template ref type: null (object) 
  at <Anonymous> (Root)

[exodusanto]

Maybe related to #724 but I have this error at runtime and the example is more simple

[yyx990803]

The actual warning should be Invalid HostVNode type: undefined, right? (If I am right, this is exactly why you should provide an actual repro)

[exodusanto]

Right. Is there any codesandbox template with Vue 3?

[yyx990803]

You can easily provide repro using the global build: https://unpkg.com/browse/vue@3.0.0-alpha.4/dist/

[exodusanto]

Ok... so no need of the repo link 😄