It should be a way to go to the next cell (by typing tab or left arrow), right now I'm forced to click on the cell I want to edit. When I'm done with one cell, the application should enable the editing to the next cell. At the end of row, it may go down to the next row.
Agreed, the in place editing was never changed and it needs a huge refactor. Since I'm planning on supporting MeeGo tablet I will need to re-do the UI anyway. It will be done in QML with a modern UI and I will just do the same for the desktop version. This is why I need to refactor all libraries before.
Anyway if you switch the view on the right to edit mode you can do what you ask for.