My situation is that one job launch two job instance concurrently and job configurate to check 'Automatically delete the stack when the job completes' box. I have use a environment variable as a part of Stack name. for example (ABC${BUILD_NUMBER} ) The two job instance runing in same windows slave.

issue:
The one job instance will delete all Stack created by the two job instance after itself completes.
The attachment show build 6 delete stack of build 5.

another strange phenomenon is last build's environment variable will appear on this build's environment .