The first is desired behaviour. It allows customers to snapshot an EC2 instance that they have accidentally terminated so that they can recover the data.
That is shows the wrong EBS volume is definitely not the right behaviour. Please create a support case for this issue.
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Copying EBS Snapshot Across RegionsAccepted Answerasked 2 years ago
InternalError creating EBS snapshotasked 5 months ago
Bug Reportasked 3 years ago
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MSK ebs snapshotasked 2 years ago