Azure AD Entitlement Management Extensions feature broken after new user experience

[brlgen]

I noticed the user experience changed for creating an extension for a an Entitlement Management Catalog. It has more options now. However trying to create a new extension/logic app fails. Looking in the Azure Monitor activity logs there is no clear error message besides the failure.  It seems the updated experience has broken the deployment phase of the logic app. Anyone else noticed this? 

Btw my account has both Global Administrator and Owner permissions.

[#2]

Appears that the doc team are aware but no link as to how to do it -
https://github.com/MicrosoftDocs/azure-docs/issues/106495

[#3]

If you notice carefully I'm the one who has opened that issue :)

[#4]

Lol, I did wonder!

I can call my Logic App and it completes successfully, however I can't get the Callback to work from the Logic App to Entitlement Management via Graph