QDoubleSpinBox dot(.) decimal separator disappears for values >= 1000

1. Set the dot(.) as decimal separator in Windows(Control Panel -> Region and Language -> Additional settings... -> Decimal symbol)
2. Create a QDoubleSpinBox widget with 0 - 100000 range.
3. Set value to 999, press enter, 999.00 will be displayed - OK
4. Set value to 1000, press enter, 100000 will be displayed - Wrong

This happens only if the locale are set to their default i.e ui->doubleSpinBox->setLocale(QLocale());
If they are changed, e.g. ui->doubleSpinBox->setLocale(QLocale(QLocale::English, QLocale::UnitedStates)); the issue won't reproduce.

Example(doublespinboxtest.zip):

Note:
The value returned by QDoubleSpinBox::valueChanged is the right one i.e. when setting the value to 1000 then pressing Enter on the keyboard, the value returned by QDoubleSpinBox::valueChanged is 1000 and not 100000. This means that the problem regards only the data displaying.