iOS 18 new RecognizedTextRequest DEADLOCKS if more than 2 are run in parallel

Following WWDC24 video "Discover Swift enhancements in the Vision framework" recommendations (cfr video at 10'41"), I used the following code to perform multiple new iOS 18 `RecognizedTextRequest' in parallel. Problem: if more than 2 request are run in parallel, the request will hang, leaving the app in a state where no more requests can be started. -> deadlock

I tried other ways to run the requests, but no matter the method employed, or what device I use: no more than 2 requests can ever be run in parallel.

func triggerDeadlock() {}
    try await withThrowingTaskGroup(of: Void.self) { group in
        // See: WWDC 2024 Discover Siwft enhancements in the Vision framework at 10:41                
        
		// ############## THIS IS KEY
        let maxOCRTasks = 5 // On a real-device, if more than 2 RecognizeTextRequest are launched in parallel using tasks, the request hangs
		// ############## THIS IS KEY
		        
        for idx in 0..<maxOCRTasks {
			
            let url = ... // URL to some image
			
            group.addTask {                
                // Perform OCR
                let _ = await performOCRRequest(on: url: url)
            }
        }
        var nextIndex = maxOCRTasks
        for try await _ in group { // Wait for the result of the next child task that finished
            if nextIndex < pageCount {
                group.addTask {
					let url = ... // URL to some image
                    
	                // Perform OCR
	                let _ = await performOCRRequest(on: url: url)
                }
                nextIndex += 1
            }
        }
    }
}

// MARK: - ASYNC/AWAIT version with iOS 18
@available(iOS 18, *)
func performOCRRequest(on url: URL) async throws -> [RecognizedText] {

    // Create request
    var request = RecognizeTextRequest() // Single request: no need for ImageRequestHandler

    // Configure request
    request.recognitionLevel = .accurate
    request.automaticallyDetectsLanguage = true      
    request.usesLanguageCorrection = true
    request.minimumTextHeightFraction = 0.016
	
    // Perform request
    let textObservations: [RecognizedTextObservation] = try await request.perform(on: url)

    // Convert [RecognizedTextObservation] to [RecognizedText]
    return textObservations.compactMap { observation in
        observation.topCandidates(1).first
    }
}

I also found this Swift forums post mentioning something very similar.

I also opened a feedback: FB17240843