Devextreme-angular：IE11下的DxTreeView Scroll关闭下拉菜单弹出窗口

Question

在我的 Angular 6 应用程序下：我正在下拉框组件内使用 TreeView 组件，两个 devextreme-angular 18.2.3 库

<dx-drop-down-box
    [(value)]="treeBoxEquipmentTypesValue"
     valueExpr="equipmentName"
     displayExpr="equipmentName"
     placeholder="Cocher un équipement..."
     [showClearButton]="false"
     [showDropDownButton]="false"
     [dataSource]="listEquipments"
     (onClosed)="onEquipmentTypesDropdownClosed($event)"
     (onInitialized)="syncEquipmentTypesTreeSelection()"
     (onValueChanged)="syncEquipmentTypesTreeSelection()">    

            <div *dxTemplate="let data of 'content'">
              <dx-tree-view
                #equipmentsTreeView
                id="equipmentsTreeView"
                [dataSource]="listEquipments"
                dataStructure="plain"
                keyExpr=equipmentName
                displayExpr=equipmentName
                selectionMode="multiple"
                showCheckBoxesMode="normal"
                [selectNodesRecursive]="false"
                [selectByClick]="true"
                (onContentReady)="syncEquipmentTypesTreeSelection($event)"
                (onItemSelectionChanged)="onItemEquipmentTypesSelectionChanged($event)">
              </dx-tree-view>
            </div>
</dx-drop-down-box>

这在所有浏览器中都可以正常运行，除了 IE11 之外，在那里，打开下拉列表时treetree看起来很好，但是向下滚动下拉列表时会关闭（即使{ {1}}事件被触发）

因此，我无法在 IE11

中向下滚动

可能的解决方案？