I was hacking at the plane and the plasmoid was spinning the whole time despite the lack of internet connection. I would have expected it to assume it's offline and that's fine. Explicitly setting it to offline wouldn't help either.
*** Bug 349765 has been marked as a duplicate of this bug. ***
*** This bug has been marked as a duplicate of bug 340781 ***
*** Bug 353106 has been marked as a duplicate of this bug. ***