Datatable in modal window empty after opening 2. time

http://webix.com/snippet/5145d34f
The datatable located in a modal window is empty, when the window is opend(created) a second time. Please press the button to open the dialog, you see the 2 entries in the datable. Close the dialog and open again the dialog contains a empty datatable. I can not understand why ? The window is created and closed (destroyed) and every time the parse method is called to fill up the data, what’s wrong ?

Best regards
Matthias

If you are reusing UI config - always make a copy, to prevent original config corruption

//webix.ui(WindowUI);
webix.ui(webix.copy(WindowUI));

Thanks a ton! … I could kick myself…
Best regards
Matthias