Chrome版本：版本111.0.5563.64（正式构建版本）（x86_64） Bootstrap ：4.3.1
最近的chrome更新使模态背景显示在模态本身的前面。我已经检查了不是z-index的问题，不确定是什么原因造成的。

.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1040;
    width: 100vw;
    height: 100vh;
    background-color: #000;
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1050;
    display: block;
    width: 100%;
    height: 100%;
    overflow-x: hidden;
    overflow-y: auto;
    outline: 0;
}

<div class="modal fade" id="aboutUs" tabindex="-1" role="dialog" aria-labelledby="aboutUsModalLabel"
        aria-hidden="true">
        <div class="modal-dialog" role="document">
            <div class="modal-content">
                <div class="modal-header">
                    <h5 class="modal-title">{{ property.othersPopupTitle | translate: langPreference }}</h5>
                    <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                        <span aria-hidden="true">&times;</span>
                    </button>
                </div>
                <div class="modal-body">
                    <div class="row">
                        <a (click)="tncOnClick()" class="select-wrapper">
                            <label>{{ property.tnc | translate: langPreference }}</label>
                        </a>
                        
                        <a class="select-wrapper" href="{{'tel:'+ contactUs}}" *ngIf="isMobileDevice">
                            <div class="select-icon"></div>
                            <label>{{ property.contactUs | translate: langPreference }}</label>
                        </a>
                    </div>
                </div>
            </div>
        </div>
    </div>