By default? so is there the option to make the data store server side?
I don't understand why this would ever be stored in browsers local storage unless it's a temporary session. But when I save a project having put time in to renaming icons and organising, I expect this to be securely saved. Or at least informed that it could all be lost by being in another browser/machine.
This isn't very good for design teams to use. In my case it's an icon font which will continually be modified and added to, not convert to icon font and job done.