It's seems vue.js v2.6.9 or later have bug of transition with vue-router.

[mutsuyuki]

Version

2.6.9

Reproduction link

https://mutsuyuki.github.io/vue-transition-issue/vue_2.6.9.html

correctly work with v2.6.8

https://mutsuyuki.github.io/vue-transition-issue/vue_2.6.8.html

Steps to reproduce

I make same page using vue.js v2.6.8 and v2.6.9.

I make 2 pages with page change transition.
2 pages have different transition each other.

with v2.6.8, transition work correctly, but with v2.6.9, enter transition is not work. leave transition is work correctly.

please check my repository

https://github.com/mutsuyuki/vue-transition-issue/tree/master/docs

What is expected?

some transition bug was embeded at v2.6.9

What is actually happening?

transition enter is not work.

[posva]

you need to use the appear prop for the transition to enter on trigger. This was a fix introduced on 2.6.9 for #9364

[mutsuyuki]

Thank you! Transition work correctly with "apeear" prop.