'az network nsg list' returns an incorrect result

**Describe the bug**

Hello,
I use `az aks create ...` to create a cluster. After successful creation, I want to receive information about NSG using `az network nsg list`. But it returns the empty result. I also tried something like `az resource list --resource-type Microsoft.Network/networkSecurityGroups`- it does not help.
But I see via Portal, that NSG is successfully created.
I need to wait a while (about 10 min) to get the correct result via `az network nsg list`.
The same behavior is for `az network vnet`.

Could you please explain, what needs to be triggered for correct behavior? Or just need to call additional `wait`?

**Additional context**
I found that there is very similar issue #15303, but there is no answer for a long time.

Thank you.