Skaffold: Port-forwarding does not work when SKAFFOLD_LABEL is set

[pehlert]

Expected behavior

Even with the SKAFFOLD_LABEL environment variable set, skaffold dev --port-forward should forward service pods to localhost.

Actual behavior

As soon as the SKAFFOLD_LABEL environment variable is set, port forwards are not set up anymore

Information

• Skaffold version: 1.4.0
• Operating system: OS X Catalina

I have SKAFFOLD_LABEL set globally to workaround this issue: https://github.com/GoogleContainerTools/skaffold/issues/3361

However as soon as it is set, port-forwards stop working with skaffold dev.
Of course I can set SKAFFOLD_LABEL for skaffold run commands only, however this does not look like expected behaviour.

[dgageot]

The deployment is also broken by such env var.

[pehlert]

Thanks everyone!