Why doesn't dynamic transiton duration enter work?

Question

Vue.js

Vue 3
I want to add the ability to control the route change animation
In routes.js I added the transition config

{
  ...,
  meta: {
    transition: {
      name: 'transition name',
      mode: 'out-in',
      duration: {
        enter: 1000,
        leave: 2000
      }
    }
}

I substitute in the template

<router-view v-slot="{ Component, route }">
  <transition v-bind="route.meta.transition">
    <component :is="Component" />
  </transition>
</router-view>

As a result, only leave works, but enter does not