v-html not working correctly

I am Using a posts component which fetch the data from server and showing some data

some part of my code is from tinymce editor to show the html written in the editor i am using

the v-html directive in vue js 2 but it shows raw html

<template v-if="condition">
    <div class="description" v-html="post.description"></div>
</template>

//output

<span style="color: #ff0000;">hi friends...</span>

I don't know why this is not working any one know about this please tell me Thank You all.