Creo has a bad habit of showing essential dialog windows behind other windows so you don't see them, or worse display behind other windows and cannot be seen because they are blocked by other windows that cannot be moved until you click on the dialog that you cannot access! The result is that I have to force shut down Creo from the windows task manager!
One pernicious example of this is the regain license dialog window that sometimes appears behind other Creo windows which are paired with a dialog that asks to save abort or exit because the license has been lost. If I minimize all windows I still cannot click on it. Nor can I click on it. I can see it when I hover over the taskbar file explorer icon but when I click on it it will not come to the top of the windows so I cannot choose an option! This stalemate remains in effect even if I regain my license. All I can do is force shut down Creo!