NSPopover not showing content on macOS Sonoma

I'm experiencing a weird issue where NSPopover doesn't show content. What's also strange is that when inspecting view in Xcode Debug View Hierarchy, it renders all the views as expected.

Here is how the Xcode Debug View Hierarchy looks like:

I just don't understand the issue; why is LoginViewController's view not shown. This issue started with macOS Sonoma.

Here is the Popover setup:

{
    _popover = NSPopover.new;
    _popover.animates = NO;
    _popover.behavior = NSPopoverBehaviorApplicationDefined;

    NSViewController* vc;
    if (user == nil)
    {
        vc = LoginViewController.new;
    }
    else
    {
        vc = MessageViewController.new;
    }
    _popover.contentViewController = [RootViewController.alloc initWithRootViewController:vc];
    [_popover.contentViewController loadView];
    _statusItem = [NSStatusBar.systemStatusBar statusItemWithLength:24];
    _statusItem.button.action = @selector(onPress);
    _statusItem.button.target = self;
    [self reloadPopoverTrayImageForce:YES];
}

And here is how Popover's RootViewController is setup. I mean nothing out-of-standard here, just embedding the child view controller and his view to parent's view controller.

{
    self.view = NSView.new;
    self.view.translatesAutoresizingMaskIntoConstraints = NO;

    [self.view addSubview:self.containerView];
    if (self.rootViewController)
    {
        [self addChildViewController:self.rootViewController];
        [self.containerView addSubview:self.rootViewController.view];
        self.rootViewController.view.translatesAutoresizingMaskIntoConstraints = NO;
        id r = @{ @"root": self.rootViewController.view };
        [self.containerView addFor:r constraints:@"|[root]|"];
        [self.containerView addFor:r constraints:@"V:|[root]|"];
    }
    [self.view addSubview:self.footerView];
    [self reloadConstraints];

    id v = @{
            @"container": self.containerView,
            @"footer": self.footerView
    };

    [self.view addConstraint:[NSLayoutConstraint
            constraintWithItem:self.view attribute:NSLayoutAttributeWidth relatedBy:NSLayoutRelationEqual
                        toItem:nil attribute:NSLayoutAttributeNotAnAttribute multiplier:1.0 constant:WIDTH]];
    [self.view addConstraint:[NSLayoutConstraint
            constraintWithItem:self.view attribute:NSLayoutAttributeHeight relatedBy:NSLayoutRelationEqual
                        toItem:nil attribute:NSLayoutAttributeNotAnAttribute multiplier:1.0 constant:HEIGHT]];

    [self.view addFor:v constraints:@"|[container]|"];
    [self.view addFor:v constraints:@"|[footer]|"];
    [self.view addFor:v constraints:@"V:|[container]-0-[footer(44)]|"];
}