QToolButton and QToolBar actions' menus are shown on a wrong display

I have 2 displays:

1) laptop/primary 1920x1080 (left)

2) hdmi/secondary 2560x1080 (right)

And I have widgets based Qt-only application with a toolbar. Some actions added to the toolbar have menu.

If I open this menu (by clicking the toolbar button) on the primary display it's shown properly. If I move the application window to the secondary display and click the toolbutton there, the menu is shown on the primiary display aligned to its right edge, while Y coordinate looks valid.

This behavour doesn't depend on menu size. I have 3 affected to these problem menus implemented in different time / different ways but all of them are affected, one of them is very small (a couple of short items). One of the menus comes from a QToolButton being added right to the form instead of QToolBar.

Even so any context menu for the same window or a menu I render manually menu->exec(QCursor::pos()); is shown in the correct position. Menus set to QPushButtons also work properly.

 Minimal reproducible example

#include <QApplication>
#include <QMenu>
#include <QToolButton>

int main(int argc, char **argv) {
  QApplication app(argc, argv);
  auto button = new QToolButton();
  button->setText("button");
  button->setPopupMode(QToolButton::InstantPopup);
  QMenu *menu = new QMenu(button);
  menu->addAction("item");
  button->setMenu(menu);
  button->show();
  return app.exec();
}