OpenLayers预选中Feature后无法正常取消选中的问题

我基于OpenLayers 9.1开发应用，未引入其他UI库。需求是通过查询字符串指定Feature，在地图加载完成时将其设为唯一选中项。我的实现方式是监听地图的loadend事件，在事件回调中给Select交互派发select事件，传入包含目标Feature的选中集合和空的取消选中集合，以此完成预选中。

目前出现的异常情况：

• 预选中操作能成功选中目标Feature，但后续点击地图无Feature的空白区域时，选中状态无法清除，起始Feature仍保持选中，且Select交互的select事件处理函数完全不触发。
• 点击任意其他Feature后，再点击空白区域就能正常清除选中状态。
• 如果加载应用时没有查询字符串（即无起始Feature），所有选择行为均符合预期。

相关代码片段 #

/* Map Setup */
const map = new Map({
  target: 'map',
  layers: [
    baseLayer,
    casLayer,
    clientsLayer,
    pathsLayer
  ],
  view: new View({
    projection: MAP_PROJECTION,
    center: CAS_POINT.getCoordinates(),
    zoom: 9
  })
});
/* End Map Setup */

/* Selection Interaction Setup */
const selected = {};
let preSelected;
const actSelect = new Select({
  layers: [clientsLayer, casLayer]
});
actSelect.on('select', function (evt) {
  if (preSelected && !evt.selected.includes(preSelected)) {
    evt.deselected.push(preSelected);
    preSelected = null;
  }
  evt.selected.forEach((feature) => {
    feature.set('isSelected', true);
    feature.setStyle(featureStyleFn);
    selected['C' + feature.get('companyId')] = feature;
  });
  evt.deselected.forEach((feature) => {
    feature.set('isSelected', false);
    feature.setStyle(featureStyleFn);
    delete selected['C' + feature.get('companyId')];
  });
  displayInfobox(selected);
  displayPath(selected);
});
map.addInteraction(actSelect);
/* End Selection Interaction Setup */

/* Select Starting Feature */
if (params && params.get('fid')) {
  const startFeatureID = params.get('fid');
  map.once('loadend', (event) => {
    console.log(map.getInteractions());
    const startFeature = clientsLayer.getSource().forEachFeature((feature) => {
      if ('C' + feature.get('companyId') === startFeatureID) return feature;
    });
    if (startFeature) {
      actSelect.dispatchEvent({
        type: 'select',
        selected: new Collection([startFeature]),
        deselected: new Collection()
      });
      const centerCoords = olExtent.getCenter(startFeature.getGeometry().getExtent());
      map.getView().setCenter(centerCoords);
      map.getView().setZoom(17);
      preSelected = startFeature;
    }
  });
}
/* End Select Starting Feature */

内容的提问来源于stack exchange，提问作者TheNicestGuy