Now, when I use webix designer I have find a problem. I click the “Webix UI Designer” with my design, select the “delete”, and now have a tip window and say “There is no undo, are you sure ?”, I select “cancel” but my design deleted.
I see the code with app.js and find the webix.confirm’s callback is wrong, you have no ensue the result with window. So, I think you should edit it.
I’m sorry my english is so bad.
Thank you for reporting the issue. We will fix it in the near future.
My pleasure.