Floor Plan Editor example

While i’m playing around with this interesting sample http://gojs.net/latest/extensions/FloorPlanEditor.html#, i find the open function can only list the save files which have just been saved until that page is reloaded.

When i save as a file with a name "FirstDiagram" and then i reload the page, only the in the file > delete can show "FistDiagram" while the in file>open show nothing. I try to read the code but i can't find what makes this happen.
Is this just my computer or is anything missing here?
Thanks, Regards

Vu

We’ll look into this issue.