How can get parentTextFrame of a Cell was Overflow?

Okay, I've written a variant of the function that is better because it will give the correct result in cases such as yours.

/**
 * Demo showing function that returns parent text frame of a table row.
 *  m1b
 * @discussion https://community.adobe.com/t5/indesign-discussions/how-can-get-parenttextframe-of-a-cell-was-overflow/m-p/14030313
 */
function main() {

    var doc = app.activeDocument,
        table = doc.stories.everyItem().tables[0],
        rows = table.rows.everyItem().getElements(),
        result = [];

    for (var i = 0; i < rows.length; i++) {
        var parentFrame = getRowParentTextFrame(rows[i]);
        if (parentFrame)
            result.push('row: ' + rows[i].index + '  parentFrame.id: ' + parentFrame.id);
    }

    alert('Results:\n'+result.join('\n'));

}
app.doScript(main, ScriptLanguage.JAVASCRIPT, undefined, UndoModes.ENTIRE_SCRIPT, 'Do Script');


/**
 * Return a row's parent text frame.
 *  m1b
 *  2023-08-24
 * Note: getting the parent text frame is a challenge when
 * there are no insertion points due to overset text, so
 * here we add a zero-width space as the first character
 * therefore the first insertionPoint will now be active
 * Note: another complication is a bug where indesign will
 * display the incorrect height for an autogrowing, overflowing
 * cell, and place the cell in the wrong parent text frame.
 * (See explanation here: https://community.adobe.com/t5/indesign-discussions/how-can-get-parenttextframe-of-a-cell-was-overflow/m-p/14030313
 *  {Row} row - an Indesign Table Row.
 *  {TextFrame}
 */
function getRowParentTextFrame(row) {

    if (!row.isValid)
        return;

    var cells = row.cells,
        parentTextFrames = row.parent.parent.parentStory.textContainers,
        rowTextFrameIDs = {},
        rowTextFrame;

    for (var i = 0; i < cells.length; i++) {

        var cell = cells[i];

        // insert zero-width space to expose first
        // insertion point in case where cell is overset
        cell.insertionPoints[0].contents = '\u200B';

        // store the parent frame index of this cell
        rowTextFrameIDs[cell.insertionPoints[0].parentTextFrames[0].id] = true;

        // clean up
        cell.characters[0].remove();

    }

    // match it to the *last-most* parentTextFrame
    parentFrameLoop:
    for (var j = parentTextFrames.length - 1; j >= 0; j--) {
        if (rowTextFrameIDs[parentTextFrames[j].id] == true) {
            rowTextFrame = parentTextFrames[j];
            break parentFrameLoop;
        }
    }

    if (
        rowTextFrame != undefined
        && rowTextFrame.isValid
    )
        return rowTextFrame;

};

By the way, if you *really* want it to return the text frame that it current (incorrectly!) appears to be in, you can change

for (var j = parentTextFrames.length - 1; j >= 0; j--) {

 to

for (var j = 0; j < parentTextFrames.length; j++) {

- Mark

Edit 2023-08-24: added my sample .indd for anyone to run the test script with.