That's stange, I know that I have portability the force us to almost create a new workspace when switching from desktop to desktop. Not the best but I ain't got any other solutions to this time.
The workspace saves the route and assure that when an image is saved, the root is set locally "e.g. res://assets/portraits/Fox.png" should be saved and not "home/levrault/examples/assets/portraits/Fox.png". Is there a way that you could open an issue right here https://github.com/Levrault/LE-dialogue-editor/issues with your generate JSON file, workspace cfg file, and describe your env? I will do my best to fix this issue!