Installer Plug-In does not work (macOS 12)

Hello guys,

I just updated to macOS Big Sur.
Now I can't see my Installer Plug-In anymore while trying to install the pkg.
I already gave the Installer Full Disk Access under System Preferences/Security & Privacy.
Opening the pkg with sudo did not help either.
Can someone reproduce the same behaviour?
On macOS Catalina everything works perfectly fine.

OS: macOS 14.0
Xcode: Version 12.0 beta (12A6159) (I also tried building the project with the newest non beta Xcode version)

Errorlog:

PackageKit: Client requested install as user consented; however client PKInstallDaemonClient pid=31155, uid=502 (/System/Library/CoreServices/Installer.app/Contents/MacOS/Installer) is not entitled. User consent request denied.

I've seen the same issue created feedback for it.
Installer Plug-In does not work (macOS 12)
 
 
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