Listeners are not updated correctly on component reuse

[xiaodemen]

Version

2.5.13

Reproduction link

https://jsfiddle.net/x78pz6u1/7/

Steps to reproduce

1. click emit1, alert something, no problem.
2. click switch.
3. click emit2, alert again, not expected!

What is expected?

not alert when I click the button emit2

What is actually happening?

alert when I click the button emit2

---

not considering the edge case: listeners are removed on component reuse.
perhaps a bug at line 260 in v2.5.13/src/core/instance/lifecycle.js

[posva]

Looks like the reused component is keeping the event listeners.
As a workaround for the moment, add a key attribute on one of the components

[posva]

Checking with git version, looks like it was already fixed. But thanks for reporting it 🙂
edit: Duplicate of #7294