I'm submitting a ... (check one with "x")
[x] bug report => Search github for a similar issue or PR before submitting
[ ] feature request => Please check if request is not on the roadmap already https://github.com/primefaces/primeng/wiki/Roadmap
[ ] support request => Please do not submit support request here, instead see http://forum.primefaces.org/viewforum.php?f=35
Current behavior
Accordion component not working properly with the primeng 4.0.0 rc1 and Angular 4
Expected behavior
Accordion component was working fine until Angular 2 and Primeng 2.0.4. But after upgrading to angular 4 and primeng 4.0.0 rc1 it stopped working. So, accordion expected to work with angular 4
Minimal reproduction of the problem with instructions
_STEPS TO REPRODUCE_:
What is the motivation / use case for changing the behavior?
Upgrade to Angular 4 & PrimeNG 4.0.0 RC1
Please tell us about your environment:
Operating System: Windows
Compiler: TSC (with Lite-Server)
Module: CommonJS
Angular Version: 4.0.0
PrimeNG Version: 4.0.0 RC1
Browser: [Chrome ]
Language: [ TypeScript 2.2.X ]
Attached Screenshot of the issue

Sadly I have to move out of PrimeNG in case Im not getting a response on this. Yes it's going to be a couple of sleepless nights for me removing your components from my application. But still I have to do it.
I ready struggled to overcome an issue with drop-down component without any support.
I very much love these components and I really wanted to use these. But at the sametime Im working
for my client and he doesn't provide me much time.
I respect all the effort that this team has put on in building these components.
With God's grace, i was able to fix this issue myself. Thanks for all the support offered
Thanks for not telling anyone else how you did it... @mani0608
Please tell us how you fixed the issue man!
Most helpful comment
Thanks for not telling anyone else how you did it... @mani0608