How can I undo

pulumi.export("some","value")

? Is this a bug? I exported the value and now I'd like to remove it so I removed it from the code and

pulumi up -y

Diff showed

Outputs:
  - some: "value"

But then

pulumi stack

still shows

Current stack outputs (1):
    OUTPUT  VALUE
    some    value

Pulumi then shows that it's removing the output until: another value is added to the Outputs

pulumi.export('another', 'value')

Then

pulumi up -y

Outputs:
  + another: "value"
  - some   : "value"

Then:

pulumi stack

Current stack outputs (1):
    OUTPUT   VALUE
    another  value

Note: As long as there is at least one output, removing it works as expected. The described scenario above happens if there is only 1 output in the stack to be removed.