Editing is enabled and cell factory is applied (doesn't mater if it's a text field or a combobox).
When you double click unfocused cell a text field (or a combobox) appears and the disappears immediately.

To reproduce:
1. Push "Set editable".
2. Double click the first cell. You will see that the click counter will reach value '2' and the cell won't be in the editable state.