Vue.js: Vapor Transition Fix Targets v-if and v-show Conflicts
A single focused fix in Vue core's Vapor mode corrects how transitions handle elements that combine v-if with v-show, preventing incorrect persistence behavior on conditionally removed roots.
Duration: PT1M58S
Episode overview
This episode is a short developer briefing from Vue.js.
It explains recent repository work in plain language.
- Show: Vue.js
- Published: 2026-07-11T13:08:52Z
- Audio duration: PT1M58S
Transcript excerpt
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Good day, and welcome to the Vue.js briefing for July 11th, 2026.
Today's activity is narrow but worth understanding if you work with transitions: a fix in Vue's Vapor mode addresses a conflict between v-if and v-show on transition root elements.
The core issue, tracked in issue 15068 and fixed in pull request 15069 by edison1105, involves a specific edge case. When an element uses v-if to control whether it exists at all, but also uses v-show for visibility toggling, the transition system could incorrectly mark that element as persisted. In practice, that…
This matters because transitions are a common source of subtle bugs precisely when multiple directives interact on the same element. If you've combined v-if and v-show on a transition root - maybe during a migration or an optimization pass - this is the kind of bug that would show up as elements lingering in the DOM…
There's not a broader pattern to report today beyond this one fix - it's a self-contained correction to Vapor's transition logic, reviewed with a single comment before merging.
What's next: if you're testing Vapor mode transitions, especially ones mixing conditional rendering with visibility toggling, this fix is…
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