[ECS][Fargate][bug] instanceTerminationWaitTimeStarted not flipped when successfully deployed

I need to know how to know if my ECS Fargate blue/green deployment is in the 'waiting' period.

I would like to poll the AWS CLI after a deployment to know if we are at this stage. This stage is reflected in the UI like this (screenshot link) https://puu.sh/CPae5/dd3b622995.png -> I want to know when the deployment is in Step 4.

Based on the CLI documentation here (https://docs.aws.amazon.com/cli/latest/reference/deploy/get-deployment.html ) I thought I could wait until `instanceTerminationWaitTimeStarted` comes back as 'true', but from the UI the wait time HAS started because we are on Step 4, but the value keeps coming back 'false' when using get-deployment using the AWS CLI. What can I do or change in my configuration to get this information?

Start with the AWS CLI get-deployment documentation and the reported deployment state in the linked UI screenshot. Reproduce an ECS Fargate blue/green deployment and compare Step 4 with instanceTerminationWaitTimeStarted; done would clarify whether the value should become true or identify the required configuration.

Written by the indexing model from the issue text.