[Accordion] onOpen and onClose emitter won't trigger any events with the new components for accordion

[PerdrieauC]

Describe the bug

The onOpen and onClose emitter for accordion don't work with the new accordion-header and accordion-content components. The events are triggered when you use the old component p-accordionTab or p-accordion-tab.

Pull Request Link

No response

Reason for not contributing a PR

• Lack of time
• Unsure how to implement the fix/feature
• Difficulty understanding the codebase
• Other

Other Reason

No response

Reproducer

https://stackblitz.com/edit/github-8n33ys8f?file=src%2Fapp%2Ftest%2Ftest.component.html

Environment

stackblitz

Angular version

19

PrimeNG version

v19

Node version

No response

Browser(s)

Chrome 132

Steps to reproduce the behavior

Link the onClose or onOpen Emitter to p-accordion with p-accordion-panel, header, content.
Try to open or close and accordion panel and nothing is triggered.

Expected behavior

Trigger the events for the onClose and onOpen Emitters with the new accordion components.

[eran10]

+1
happened in our case as well, seems like a basic ability that is missing now in the accordion component,
hope this can be fixed soon.

[boydt]

Same issue here. On version 19 and using the stock example from primeNG's website. onOpen and onClose are not getting triggered.

[benjaminforras]

Can confirm the same, we are currently blocked by this issue.

[osaf96]

These events are not working. Anyone working on this issue?

[TarhanTech]

Not wokring in my case either

[haesu]

Is there a plan or timeframe to address and resolve it?

[TarhanTech]

Is there a CONTRIBUTING.md file so I can fix this?

[TarhanTech]

Created an PR for this:
#17748

[Smorgaz]

There seems to still be an issue with those emitted events. The emitted index is always -1 in our project. I'm currently using version 19.0.8

[gregorwinkler]

Can confirm, the emitted index is always -1 in our case.