doc tell is diffrent with source code: "Native CSS animations are applied in the same way as CSS transitions, with the difference being that *-enter-from is not removed immediately after the element is inserted, but on an animationend event"

at the CSS Animations parts

• Native CSS animations are applied in the same way as CSS transitions, with the difference being that *-enter-from is not removed immediately after the element is inserted, but on an animationend event

• it's not the true : *-enter-from remote at nextFrame not animationend
  • the source code @line199 :

      nextFrame(() => {
        removeTransitionClass(el, isAppear ? appearFromClass : enterFromClass)
      // just remove  `*-enter-from`  in nextFrame
  

  • and i tried console.log ; result is also remove *-enter-from in nextFrame

Locate the CSS Animations section in the Vue documentation and compare its statement about *-enter-from with packages/runtime-dom/src/components/Transition.ts around line 199. Update the wording to match the observed nextFrame behavior, then verify that the documentation accurately describes when the class is removed.