问UIImageView拥抱&插入新图像时压缩优先级不能正常工作

EN

    let scrollView = UIScrollView()
    let contentView = UIView()

    lazy var posterImage = UIImageView().then {
        $0.contentMode = .scaleAspectFit
        $0.image = UIImage(named: "img_placeholder")    // placeholder image
        
        $0.backgroundColor = .orange
        $0.setContentHuggingPriority(.required, for: .horizontal)
    }
    
    lazy var titleLabel = UILabel().then {
        $0.textColor = .white
        $0.textAlignment = .left
        
        $0.font = UIFont.systemFont(ofSize: 25, weight: .medium)
        $0.numberOfLines = 0
        $0.minimumScaleFactor = 10
        
        $0.setContentHuggingPriority(.required, for: .vertical)
    }
    
    lazy var taglineLabel = UILabel().then {
        $0.numberOfLines = 0
        $0.textColor = .lightGray
        $0.textAlignment = .left
        $0.font = UIFont.systemFont(ofSize: 15, weight: .regular)
    }
    
    lazy var runtimeIconLabel = IconLabel().then {
        $0.icon.image = UIImage(systemName: "clock")
    }
    
    lazy var ratingIconLabel = IconLabel().then {
        $0.icon.image = UIImage(systemName: "star.fill")
        $0.icon.tintColor = .orange
    }
    
    lazy var iconLabels = UIStackView().then {
        $0.addArrangedSubview(runtimeIconLabel)
        $0.addArrangedSubview(ratingIconLabel)
        
        $0.axis = .horizontal
        $0.distribution = .fill
        $0.alignment = .leading
        $0.spacing = 5
    }
    
    lazy var mainInfoLabelStack = UIStackView().then {
        $0.addArrangedSubview(titleLabel)
        $0.addArrangedSubview(taglineLabel)
        $0.addArrangedSubview(UIView())
        $0.addArrangedSubview(iconLabels)
        
        $0.axis = .vertical
        $0.distribution = .fill
        $0.alignment = .leading
        $0.spacing = 5
    }
        
    lazy var mainInfoStackView = UIStackView().then {
        $0.addArrangedSubview(posterImage)
        $0.addArrangedSubview(mainInfoLabelStack)
        
        $0.axis = .horizontal
        $0.distribution = .fill
        $0.alignment = .fill
        $0.spacing = 10
        $0.isLayoutMarginsRelativeArrangement = true
        $0.layoutMargins = UIEdgeInsets.detailViewComponentInset

        posterImage.setContentHuggingPriority(.required, for: .horizontal)
        mainInfoLabelStack.setContentHuggingPriority(.defaultLow, for: .horizontal)

    }

        self.view.addSubview(scrollView)
        scrollView.addSubview(contentView)
        
        scrollView.snp.makeConstraints { make in
            make.edges.equalToSuperview()
        }
        contentView.snp.makeConstraints { make in
            make.edges.equalToSuperview()
            make.width.equalToSuperview()
        }

        contentView.addSubview(mainInfoStackView)

        mainInfoStackView.snp.makeConstraints { make in
            make.top.left.right.equalToSuperview()
            make.height.equalTo(self.view.snp.width).multipliedBy(0.45)
        }