I have attach project. I try to create few windows with charts. When user click to Chart -> New chart from xib, I create chart from XIB file. For Chart -> New chart from storyboard, I create chart from storyboard.
In the both situations I have same problems: when chart is created, and I drag it, or resize window, all windows disappeared. With xib files not all, but, sometimes. If I use only one window and configure in storyboard to entry point on this MainWindow - it work fine. Not disappeared never. Where I can find decision?