Tab header not displaying text on v1.0.7

[teoshinjiat]

I know there are two similar issues and two solutions provided but I can't relate the problem with mine.

#520 & #1320

My server have the same code and is running on v1.0.7 too but it can display text on its headers,

<tabset :active="0">
    <tab header="Role & Permission">
    </tab>
</tabset>

Image below is what displayed on my side as of now.

<a href="#" _v-358f2e7c=""></a>, nothing can go in the <a> tag, where it should instead display "Role & Permission"

Things I have tried

• Other vue/vue-strap versions
• Run the same code without any div around it
• Clean npm install
• Running on other PC

My current workaround is to wrap them into a bootstrap tab but I would like to find out why this is not working.