fixed IDEA-201291 Linux Native menu bar: if 'windows-style' menu (i.e. located on the window title bar) is used, menu can't be used in the Full Screen mode
fixed IDEA-200379 linux Native menu bar on Ubuntu Linux: the View menu actions have incorrect state
fixed IDEA-151200 Unity menu bar is not available for detached editor tabs and floating tool windows
fixed IDEA-200724 IntelliJ IDEA does not fully start after update, ends with window with menubar and nothing else
fixed IDEA-200374 Throwable at com.intellij.openapi.wm.impl.GlobalMenuLinux.lambda$handleEvent$4
fixed IDEA-200768 Start Splash window doesn't hide
fixed IDEA-200822 Opening any Markdown file freezes recent IntelliJ Ultimate EAP 183.3795.13
fixed GLIB-WARN (child/parent mismatches)
add traces
return checking of registry key linux.native.menu
fix loading of class GlobalMenuLib
fixed PY-32237 GUI tests Unable to register window, error: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name com.canonical.AppMenu.Registrar was not provided by any .service files
fixed IDEA-200273 Exceptions: GlobalMenuLinux - Unable to register window and AppMenu-service can't register xid
some of desktop env (KDE for example) doesn't like hierarchy changes when menu is shown, so use 'fixed' internal hierarchy
KDE regulary calls 'about-to-show' for all top-level menus, avoid handling of them with use of event-filter
