azure-cli: Budgets: az resource create - deployment error message and cannot see budgets

Describe the bug I’m trying to create budgets with az resource create and encounter two problems:

• command execution results in error message: Deployment failed. Correlation ID: <id>. Request is missing a certificate. According to the --debug output, the following things happen internally: ** GET request to Microsoft.Consumption provider --> succeeds (status 200) ** GET request to the resource group --> succeeds (status 200) ** PUT request to create budget --> succeeds (status 201, containing the budget data in the body) ** GET request to the new budget --> fails (status 401 and Request is missing a certificate error)
• In Azure Portal and via az consumption budget list, I do not see the new budget. But if I try to create the same budget again, I get a There are changes made to Budget <name>... error message. And I receive correct email notifications from such a budget, if I add an e-mail notification. Seems like I am creating zombies…

To Reproduce az resource create -g testgroup -n "testbudget2" --resource-type "Microsoft.Consumption/Budgets" --properties "{\"amount\" : 1000, \"category\" : \"Cost\", \"timeGrain\" : \"Monthly\", \"name\" : \"testbudget2\", \"timePeriod\" : {\"startDate\" : \"2019-07-01T00:00:00Z\", \"endDate\" : \"2019-12-31T00:00:00Z\"}}"

Expected behavior

• budget creation succeeds without error message
• budget is visible in Azure portal and via az consumption budget list

Environment summary

azure-cli                         2.0.69

command-modules-nspkg               2.0.3
core                              2.0.69
nspkg                              3.0.4
telemetry                          1.0.3

Extensions:
azure-cli-iot-ext                  0.7.1

Python (Linux) 3.6.5 (default, Jul 11 2019, 08:41:35) 
[GCC 7.4.0]

Ubuntu 18.04

Additional context I think, there is something happening in the background. On Monday this week, the behavior of the az resource create command changed. Until then, things were like this:

• I saw the missing certificate error
• I saw the Budgets after creating them
• No e-mail notifications were thrown, when budget limits were exceeded

Another weird thing is that if I first create a budget this way, then delete the whole resource group with this budget inside, then create a new resource group with the same name as the old one and create the same budget inside again, I also get the There are changes made to Budget <name>... error. So obviously, the zombies don’t get killed properly when destroying their resource group.

If it helps, I can also provide some debug output. Thanks for your help!