When changing the value of a QSpinBox using the Up/Down keys, the Orca screen reader on Linux doesn't reliably announce the new value, but often instead announces an earlier value.

Steps to reproduce:

1.  Build and run this sample program on Linux

   #include <QApplication>
   #include <QMainWindow>
   #include <QSpinBox>
   
   int main(int argc, char *argv[])
   {
       QApplication a(argc, argv);
       QMainWindow w;
   
       QSpinBox* spinBox = new QSpinBox(&w);
       spinBox->setAccessibleName("MySpinBox");
       spinBox->setRange(0, 1000);
   
       w.setCentralWidget(spinBox);
   
   
       w.show();
       return a.exec();
   }
   

2. run the Orca screen reader
3. move focus to the spinbox in the sample program
4. press the Up key on the keyboard multiple times quickly

Actual result:

Each time the Up key is pressed, the value is increased by one as expected, but the Orca screen reader often announces a previous value, not the newly displayed one. (The attached screencast demonstrates this.)

Expected result:

Orca should always and consistently announce the new value.