From a feature request I closed because it really is a bug:
"it would be great to allow saving a note, or a description, during its seizure without to have to close the window. It is not safe to make a note and to keep its window opened with saving it regularly. Sometime I lose the note because I haven't save it and I have closed too quickly the task coach window."
Here's the situation: if a description is being edited, it is not saved until the editor is closed or a new field in the editor is selected. If Task Coach is quit, the information is lost.
I propose this solution:
When quitting, have Task Coach actually close any open editors (thus entering the edits), and then doing the normal auto-save or the dialog about saving (as is already the case) before fulling closing the program.
Diff: