az backup vault show duplicated eTag key

az backup vault show duplicated eTag key.

Command Name az backup vault show

Errors:

ConvertFrom-Json : Cannot convert the JSON string because a dictionary that was converted from the string contains the
duplicated keys 'eTag' and 'etag'.
At line:1 char:110
+ ... me}" --name "${recoveryServicesVaultName}" -o json | ConvertFrom-Json
+                                                          ~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [ConvertFrom-Json], InvalidOperationException
    + FullyQualifiedErrorId : DuplicateKeysInJsonString,Microsoft.PowerShell.Commands.ConvertFromJsonCommand

az backup vault show --resource-group "${resourceGroupName}" --name "${recoveryServicesVaultName}" -o json
Command group 'backup' is in preview. It may be changed/removed in a future release.
{
  "eTag": null,
  "etag": "W/\"datetime'2020-06-03T11%3A50%3A42.8239336Z'\"",
<redacted>
"type": "Microsoft.RecoveryServices/vaults"
}

Value in ARM API:
{
  "location": "westeurope",
  "etag": "W/\"datetime'2020-06-03T11%3A50%3A42.8239336Z'\"",
<redacted>
}

To Reproduce:

az backup vault show --resource-group "${resourceGroupName}" --name "${recoveryServicesVaultName}" -o json | ConvertFrom-Json

Expected Behavior

single eTag value returned by az cli

Environment Summary

Windows-10-10.0.18362-SP0
Python 3.6.6
Installer: MSI

azure-cli 2.7.0

Extensions:
azure-devops 0.18.0
interactive 0.4.4

Additional Context

[adityabalaji-msft]

New ETA for the fix is 30 July

[adityabalaji-msft]

The fix is now available in 2021-07-01 version. Closing the issue for now, feel free to reopen in case you are facing problems