Run transition on programmatically created component - vue.js

Question

I'm using this code
var ComponentClass = Vue.extend(Notification);
var instance = new ComponentClass({
propsData: {
notification: notification
}
});
instance.$mount();
this.$refs.notificationContainer.appendChild(instance.$el);
to programmatically create a component when a new notification is received through pusher, this is my notification component
<template>
<transition
enter-active-class="transition ease-out duration-100 transform"
enter-class="opacity-0 scale-95"
enter-to-class="opacity-100 scale-100"
leave-active-class="transition ease-in duration-75 transform"
leave-class="opacity-100 scale-100"
leave-to-class="opacity-0 scale-95"
>
<div class="bg-gray-100 px-4 py-2 border-0 rounded relative mb-4 text-gray-700 flex items-center">
<div class="flex-shrink-0 h-10 w-10">
<img
class="h-10 w-10 rounded-full"
:src="notification.user.profile_photo_url"
:alt="notification.user.username"
>
</div>
<span class="inline-block align-middle flex-1 ml-2 mr-4">
<strong>{{notification.user.username}}</strong> {{notification.message}}
</span>
<button class="focus:outline-none">
<i
class="fad fa-times text-red-600"
></i>
</button>
</div>
</transition>
</template>
<script>
export default {
props: {
notification: Object
}
}
</script>
but for some reason the transition doesnt run when the component is created

Answer 1

Fixed by adding appear to the transition element