Design broken on Windows

I write an Application for Windows, OSX and Linux. On OSX and Linux works all fine, on Windows all components disappears after minimizing the window, only the background is painted. We just use simple components, set their bounds and that’s it. We tested it on Windows 10 with hDPI, we work on Linux with hDPI too without any Problems. We would appreciate any help.
Thanks in advance.

I’d start by putting breakpoints on some paint (Graphics&) calls to see if they’re being called.
Without some code or even a Jucer PIP to reproduce the issue, it’s a shot in the dark. repaint isn’t always retriggered, creation order of instances does matter, etc…