0π
To make transitions work on initial render make sure to add the appear
attribute
<transition
appear
appear-class="custom-appear-class"
appear-to-class="custom-appear-to-class"
appear-active-class="custom-appear-active-class">
...
</transition>
Ref: https://v2.vuejs.org/v2/guide/transitions.html#Transitions-on-Initial-Render
Source:stackexchange.com