Publish-PSResource to Azure Container Registry throws an error, when anonymousPullEnabled: true #1828

Prerequisites

• Write a descriptive title.
• Make sure you are able to repro it on the latest released version
• Search the existing issues.

Steps to reproduce

I was looking for a way to allow my users to download (pull) PowerShell modules from our Azure Container Registry (ACR) without requiring authentication. I found the anonymousPullEnabled property in the ACR settings and set it to $true. This allowed users to pull modules from our ACR without authentication.

However, when I try to upload new modules (while already signed in with my admin account using Connect-AzAccount), I receive the error shown in the attachment.

Is there a better approach to allow users to pull modules from our ACR anonymously? Or am I on the wrong path? Assuming that Microsoft Artifacts hosted on ACR support anonymous pulls, it seems like this should also be possible for us — but I haven’t found any guidance online how to set this up.

Expected behavior

A login prompt, or using my current Az Session.

Actual behavior

I get the error: 
Publish-PSResource: One or more errors occurred. (Error occured while starting to upload the blob location used for publishing to ContainerRegistry: System.Net.Http.HttpRequestException 'Error occured while trying to retrieve response header: Error occured while trying to retrieve response: Response status code does not indicate success: 401 (Unauthorized).')

Error details

Environment data

1.1.1                 Microsoft.PowerShell.PSResourceGet

Name                           Value
----                           -----
PSVersion                      7.5.0
PSEdition                      Core
GitCommitId                    7.5.0
OS                             Microsoft Windows 10.0.26100
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

Visuals