How to avoid this thread priority inversions ?

Context: Xcode 16.4, Appkit

In a windowController, I need to create and send a mouseDown event (newMouseDownEvent).

I create the event with:

let newMouseDownEvent = NSEvent.mouseEvent(
       with: .leftMouseDown,
       location: clickPoint,
       // all other fields

I also need to make window key and front, otherwise the event is not handled.  

 func simulateMouseDown() {
    self.window?.makeFirstResponder(self.window)   
    self.calepinFullView.perform(#selector(NSResponder.self.mouseDown(with:)), with: newMouseDownEvent!) 
}

As I have to delay the call( 0.5 s), I use asyncAfter:

        DispatchQueue.main.asyncAfter(deadline: .now() + 0.5, qos: .userInteractive) {  
            self.simulateMouseDown()   
        }

It works as intended, but that generates the following (purple) warning at runtime:

[Internal] Thread running at User-interactive quality-of-service class waiting on a lower QoS thread running at Default quality-of-service class. Investigate ways to avoid priority inversions

I have tried several solutions,

• change qos in await:

DispatchQueue.main.asyncAfter(deadline: .now() + 0.5, qos: ..default)

• call from a DispatchQueue

            let interactiveQueue = DispatchQueue.global(qos: .userInteractive)
            interactiveQueue.async {
                self.window?.makeFirstResponder(self.window)
                self.calepinFullView.perform(#selector(NSResponder.self.mouseDown(with:)), with: newMouseDownEvent!) 
            }

But that's worse, it crashes with the following error:

FAULT: NSInternalInconsistencyException: -[HIRunLoopSemaphore wait:] has been invoked on a secondary thread; the problem is likely in a much shallower frame in the backtrace; {
    NSAssertFile = "HIRunLoop.mm";
    NSAssertLine = 709;
}

How to eliminate the priority inversion risk (not just silencing the warning) ?