Hot Exit loss after changing folders

[goszlanyi]

As far as I understand, the Fresh Editor is "folder-based",
i.e. it has a separate memory for each folder it was opened from.

The symptom:

• Hot Exit is ON.

• Fresh is started in Folder1 with two saved and one unsaved buffers.
  After closing/reopening the editor, all saved and unsaved buffers are there.
  So far, so good.

• However, if I cd Folder2, open Fresh there with different files/buffers,
  then close it, cd Folder1 again, reopen Fresh there,
  then only the saved files survive, the unsaved buffer disappears.

• For simplicity, an unsaved buffer was involved only in Folder1.

I think this is a bug.