ScriptUI: delete listbox and create a new one in its place

Good day!
I have a script that does some work based on data from csv files. When working with a script, a user can upload several files sequentially (i.e., after finishing working with one file, I need to make it so that the user can load another without closing the script window). The csv files have a different structure and a different number of fields (this is controlled by the user) - it seemed to me convenient to show them using a listbox with headers.

Before the user specifies the file, I open the form with an empty listbox object (just to reserve a place for it in the form):

After reading and processing the csv file, I create a new listbox object using the buildList() function. To do this, I delete the previously created testList object from the form, then load a new one in its place. And at this moment i have a problem with ScriptUI:

If I do not delete the object, then the listbox will display normally (but old instances will be preserved):

It is clear that i can rewrite the function so that for each csv file a new instance of the window is loaded in which a listbox with the necessary parameters will be immediately generated, but in my case this is inconvenient for the user.

I trying to understand - is this a bug of ScriptUI or am I doing something wrong?

(the example is simplified, just to demonstrate the problem)

#target photoshop

var parsedCSV = [["TestField1", "TestField2", "060", "070", "080", "090"], ["TestField3", "TestField4", "145"], ["TestField5", "TestField6", "361"]]

    var w = new Window("dialog"),
    oldList = w.add('listbox', [0,0,520,200]),
    bn = w.add("button", undefined, "test")
    
    bn.onClick = function () {
        w.remove (oldList) // problem here, i'm trying also w.remove (w.children[0])
        buildList(parsedCSV)
    }

    w.show ()

function buildList (list) {
    var columns=0, 
    wordLen={}

    for (var i=0; i<list.length; i++){
        if (list[i].length>columns) columns = list[i].length
        for (var n=0; n<list[i].length; n++){
            if (wordLen[n]=undefined) {
                wordLen[n] = list[i][n].length
            } else {
                if (list[i][n].length > wordLen[n]) wordLen[n] =list[i][n].length 
            }
        }
    }

    var props = { numberOfColumns: columns, showHeaders: true, columnTitles: [], columnWidths: [] }

    for (var i=0; i<columns; i++){
        props.columnTitles.push(String(i+1))
        props.columnWidths.push(wordLen[i]*12)
    }

    newList = w.add("listbox", [0, 0, 520, 200], undefined, props)
    
    for (var i = 0; i < list.length; i++) {
        var cur = list[i]
        newList.add("item", cur[0])
        for (var n = 1; n < cur.length; n++) {
            newList.items[i].subItems[n - 1].text = cur[n];
        }
    }
    
    w.layout.layout(true)
}