There have been several things that Mark Shuttleworth has changed in Ubuntu compared to the traditional Linux desktop, and this is how after a while it came Unity and it generated the very adverse reactions that we all know. But it must be recognized that beyond agreeing or not, the path they seek to travel is interesting and that it tries to offer an alternative with its own stamp and where it seeks to simplify the interface and streamline its use.
One of the issues that have left many dissatisfied is that of the global menu, which shows us the menu items of the applications in the top bar as long as the mouse pointer is over their windows, and disappears when said window (s) lose focus. As well, Apparently Ubuntu 15.04 Vivid Verbet will fix the application menus on the top bar, that is, they will not disappear when the mouse focus is lost, but this will only happen when the advantage is no longer active.
Before continuing, say that this is already possible today, although for this you have to edit some configuration issues through dconf, but rumors indicate that the developers would be working to implement this through a system option so that any user can enable it quickly and easily, without even requiring to restart Unity as is the case in the current state of affairs.
If we are already using any of the betas of Ubuntu 15.04 Vivid Version and we have enabled the channel 'Proposed' we can open the Dconf editor and go to the option com -> canonical -> unity -> 'always show menus' and check the checkbox. Then, as we mentioned in the previous paragraph, you have to restart Unity, which we do by pressing Alt + F2 and then entering 'unity', or ending the user session and starting it again.
The rumors that this option will be available from the system configuration options are fueled by some issues, such as the fact that although this novelty only benefits Ubuntu 15.04 users the objective is to make a backport to offer it also to those who use Ubuntu 14.04, which as we well know is LTS (long term support).