QSystemTrayIcon doesn't work on Fedora 32

[Dramcryx]

I have Fedora 32 installed on my machine and none of sessions return true from QSystemTrayIcon::isSystemTrayAvailable(). Neither Wayland nor Xorg.
Simplest and obvious example:

#include <QApplication>
#include <QSystemTrayIcon>

int main(int argc, char ** argv)
{
    QApplication qapp(argc, argv);
    assert(QSystemTrayIcon::isSystemTrayAvailable());
    return 0;
}

But supportsMessages() returns true in both cases. So is it Wayland (or generally GNOME) problem or I can fix it somehow?

[Paul Y. L.]

@Dramcryx I don't see the tray icon even when login with x11 gnome environment. So I believe that is Fedora GNOME issue, since it works on Ubuntu 20.

By installing and enabling "KStatusNotifierItem/AppIndicator Support" GNOME extension on Fedora 32, the tray icon come back for my app.