az vm run-command is not working with script files as stated

The az vm run-command is not working with script files as stated in this page. Nor are they working from a yml pipeline (AzDo) in the same manner as from the commandline.

From the commandline, to be able to use a script, you sometimes need to put single quotes around the script name (not alway, which seems inconsistent. Using this command with a deployment pipeline to run certain scripts at once (dcs is too slow), you need to put quotes around the scriptname, because it will report an error if you don't. And when you do, the pipeline complains the following: "\nThe splatting operator '@' cannot be used to reference variables in an expression." And if that isn't happening, then a powershell script is created with quotes around the scriptname, instead of the script.
And lastely, the command does strange things when you use more than 2 parameters.
Unfortunately the Powershell cmdlet is having it's own quircks, although moslty similar results as with az.

We are running Az CLI 2.22.0.

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#### Document Details

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* ID: f04b196d-7d11-7213-f037-f12b85b19c52
* Version Independent ID: adc05d8e-b13b-134b-5f61-42aaf23666df
* Content: [az vm run-command](https://docs.microsoft.com/en-us/cli/azure/vm/run-command?view=azure-cli-latest#az_vm_run_command_invoke)
* Content Source: [latest/docs-ref-autogen/vm/run-command.yml](https://github.com/MicrosoftDocs/azure-docs-cli/blob/master/latest/docs-ref-autogen/vm/run-command.yml)
* Service: **virtual-machines**
* GitHub Login: @rloutlaw
* Microsoft Alias: **routlaw**