I’ve found that if you follow these command exactly you can load both the UD and Az module in PS Core. I tried on Windows. I’m looking for a more permanent fix but it might be helpful for now.
PS C:\Users\Adam> import-module universaldashboard
PS C:\Users\Adam> start-uddashboard -port 10001 | STop-UDDashboard
PS C:\Users\Adam> Connect-AzAccount
WARNING: To sign in, use a web browser to open the page https://microsoft.com/devicelogin and enter the code to authenticate.
Account SubscriptionName TenantId Environment
------- ---------------- -------- -----------
PS C:\Users\Adam> import-module az.resources
PS C:\Users\Adam> get-command -Module az.resources
CommandType Name Version Source
----------- ---- ------- ------
Alias Get-AzADServicePrincipalCredential 1.3.1 az.resources
Alias Get-AzResourceProviderAction 1.3.1 az.resources
Alias New-AzADServicePrincipalCredential 1.3.1 az.resources
Alias Remove-AzADServicePrincipalCredential 1.3.1 az.resources
Alias Set-AzADApplication 1.3.1 az.resources
Alias Set-AzADServicePrincipal 1.3.1 az.resources