//Add Item to list
collection.splice(newIndex, 0, collectionItem);
valueAccessor().valueHasMutated();
ui.item.remove(); //add this line
In your sortableList binding, looks like you want to remove the item at the end, since you will be rendering an item based on what you push to your collection.
//Add Item to list
collection.splice(newIndex, 0, collectionItem);
valueAccessor().valueHasMutated();
ui.item.remove(); //add this line
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在您的 sortableList 绑定中，看起来您想在最后删除该项目，因为您将根据推送到集合的内容来渲染项目。
In your sortableList binding, looks like you want to remove the item at the end, since you will be rendering an item based on what you push to your collection.