[BUG] Window icon doesn't appear while using Wayland session

When you create a new window and set it's icon using the icon property, the icon doesn't appear on Wayland sessions, it only shows the Wayland's Logo instead. On X11 session it shows the icon, only on Wayland that it doesn't show.

Slint code:

export component AppMainWindow inherits Window {

    icon: @image-url("assets/logo-64x64.png");

    in property <[DeviceInformation]> enumerated_devices;

    VerticalBox {
       for device in enumerated_devices: Text {
            text: "Device \{device.rawPath}: \{device.vendor} \{device.model}";
        }
    }

}

C++ Code:

void before_exit(void)
{
    device_deinit();
}

int main(int argc, char **argv)
{
    atexit(before_exit);

    device_init();

    std::vector<DeviceInformation> devices;

    for (const auto &device : device_enumerate_all()) {
        devices.push_back(DeviceInformation {
            .name = device.name.c_str(),
            .removable = device.removable,
            .vendor = device.vendor.value_or("").c_str(),
            .model = device.model.value_or("").c_str(),
            .rawPath = device.rawPath.value_or("").c_str(),
        });
    }

    auto window = AppMainWindow::create();

    window->set_enumerated_devices(
        std::make_shared<slint::VectorModel<DeviceInformation>>(devices));

    window->run();

    return 0;
}

In X11:

In Wayland:

Desktop Enviroment: KDE Plasma
OS: Arch Linux x86_64
Slint version: 1.8.0

slint-ui / slint

[BUG] Window icon doesn't appear while using Wayland session #6771