In bug 1145896 comment 9, nalexander was able to get an invisible "Send to other devices" dialog to appear. His steps were (via comment 9): > mcomella: here's how I tested this. I created an FxA, synced against a few > remote clients, and verified that using the Share Plane > Send to Other > Device from within Fennec had a list of external clients. Then I deleted > the FxA. I then tried the Share Plane again, but of course there is no > account so there is no list of clients. (This is expected, right?) Here, an empty dialog appeared. While I have not extensively tested, I have been unable to repro.