Hello, we're setting up a cluster of Fedora boxes at my company. Qemu is added because some partners may need or expect a fully functional Windows environment. Everyone who expects Windows or might be irritated by seeing anything else should remain oblivious to the fact that it's running a VM. So it's crucial that fullscreen works. Along the same lines, it's important that fullscreen can be activated by commandline (so that Qemu starts in fullscreen and hasn't to be taken there by the user).
There is a bug where the GTK (SDL appears to be broken due to some sdl2 incompatibility, as I understood) menu bar won't hide in fullscreen: https://bugs.launchpad.net/qemu/+bug/1294898 A patch was provided by the initial reporter a long time ago. I was hoping that this could receive a bit of attention, since 3.8 can now widely be expected in the GTK3 line. (Aside: I have no chance to try this now but I think the -full-screen switch is also broken for GTK). Thanks! Cedric