An issue with minimise not working when in fullscreen on macOS was
workaround in Pull Request #1813. The underlaying issue is currently
unknown.
macOS native fullscreen mode was looked into, but no clear answer was
given. See #1813 for details.
break;
case ID_MINIMIZE:
#ifdef __APPLE__
+ // FIXME: Workaround for not being able to minimize in fullscreen
+ // https://github.com/TigerVNC/tigervnc/pull/1813
if (window()->fullscreen_active())
window()->fullscreen_off();
#endif