Possible bug of <transition> component - flickering when swapping two elements using :key
Aug 25th 2021
Version
3.2.6
Reproduction link
https://codepen.io/liwoj/pen/mdwyjKv
Steps to reproduce
Just watch the "carousel"
What is expected?
Transition runs without flickering
What is actually happening?
At the beginning of elements swap, leaving element is for a moment (maybe one tick) patched with new data...
If you switch the Codepen to Vue 2.6.14, it works flawlessly...
Aug 26th 2021
My bad, completely overlooked the change of transition classes from v-enter to v-enter-from. Closing...