I hope it is ok to post this here, because it has to do with a managed package.

In the dev org of our managed app I create a custom formula field on one of our custom objects.

When I reference a custom label in the formula,  I always get a blank field. I used the 'Insert field' dialog to add this:

$Label.myNamspace__myCustomLabel

There is no error upon saving so I think the custom label is recognized as valid but when I add the field to the listview, it is empty.

I tried the protected/unprotected checkbox for the label but with no effect.

Is this supported or is it a bug ?

Is the custom label added to the package when I uploaded it (as for VF pages), because I cannot add it manually.

Thanks.