I recently upgrade my system to Windows 10, I am facing an issue that not exist when I was using Windows 7. in STAAD pro when I click on minimize it reacts like I clicked on the maximize, if click on maximize react like if it clicked on close, if I click on account picture/icon it reacts like if I clicked on the minimize. But mostly no action done only blink in the icon, so I have to right click and select manually, or click on the upper frame and pull it done to see other open windows in my screen.
Please note that there is a posting on our WIKI site that provides more information:-
http://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki/37246/not-able-to-minimize-or-maximize-staad-pro-using-the-buttons-at-the-top-right-corner