I have a QTableWidget where I have cells that contain a QPushButton and at some point I won't need those buttons anymore so instead of removing (removeCellWidget) I decided to just make them invisible. However, after I do it, if that cell size ever changes, during a window resize for example, the buttons recently setVisible(false) become visible again.

Here is a compilable code tested with a QPushButton but I believe the problem is true to any widget. On clicking the button it will be become invisible, afterresizing it it will beome visible again

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    ui->table->setRowCount(1);

    QPushButton *p = new QPushButton("Test");

    ui->table->setCellWidget(0, 0, p);

    connect(p, &QPushButton::clicked, [p]()
    {
        p->setVisible(false);
    });

}