1. Have a two monitor setup.
2. Screen goes over both monitors (no mirror mode).
3. Open a note.
4. Move it on a removable monitor.
5. Close note and close tomboy.
6. Remove monitor where the note was opened.
7. Open tomboy and note.
8. The note is now opened on its last position outside of the actual screen size.

Expected result:
Tomboy should open notes on vissible scrren region.

The only way to get the note back is to maximize the note window over the taskbar entry and then minimize.