[Reg. 5.14->5.15]Resize Widget inside QTableWidget

The following code

#include <QApplication>
#include <QTableWidget>
#include <QPushButton>
int main(int argc, char *argv[])
{
 QApplication a(argc, argv);
 QTableWidget table;
table.setRowCount(2);
 table.setColumnCount(3);
 
 QPushButton button("Push me");
table.setCellWidget(1, 1, &button);
 
 table.show();
return a.exec();
}

 generates an unwanted behavior when resizing the column or rows of the TableWidget:

• When the mousebutton is hold down during the resizing process, the widget is not resized: it remains unaffected by the changes
• Once the mousebutton is released the dimension of the widget are set to the correct ones.
• In the preceding versions of Qt the behavior was not like this. (see https://forum.qt.io/topic/116674/qtablewidget-with-qpushbutton-inside-resize-problem and https://stackoverflow.com/questions/62745274/qtablewidget-with-qpushbutton-inside-resize-problem?noredirect=1#comment111014280_62745274)

The same strange behavior is present using PySide2.

The same strange behavior happens if one sets a persistent editor containing a certain widget in a table view.