az devops security permission update issues

Hi There, using CLI , with below command we are unable to grant permission to teams created in project collection where as we are able to grant permission to multiple individual emails

**Not working**
az devops security permission update --namespace-id '2e9eb7ed-3c0a-47d4-87c1-0ffdd275fd87' --subject '[xxx]\team1' --token "repoV2//" --allow-bit 16502 --org "https://dev.azure.com/someorg"

**working**
az devops security permission update --namespace-id '2e9eb7ed-3c0a-47d4-87c1-0ffdd275fd87' --subject 'xxx@email.com' --token "repoV2//" --allow-bit 16502 --org "https://dev.azure.com/someorg"

**Error message:**
request failed: Error occurred in request., RetryError: HTTPSConnectionPool(host='dev.azure.com', port=443): Max retries exceeded with url: /someorg/_apis/AccessControlEntries/someid (Caused by ResponseError('too many 500 error responses'))

Azure CLI version : 2.5.1
Extensions:
azure-devops 0.18.0
this is the same issue for pipeline permission as well. Please help fix this