QFileDialog::getOpenFileName() crops the front portion of the filename in the dialog's lineedit

The following line of code that brings a file dialog with a default file name in the line edit. But, the default filename is cropped in the beginning as shown in the attached image.

QString fileName = QFileDialog::getOpenFileName(nullptr, "Open File Template", "C:\\BoxTower_DEMO_2020.pltpy", "Inspire Plot Templates (*.pltpy)");