1. Open dialog with mouse double-click
2. Click on spin box step button
3. Move mouse from step button
Bug - steps are continuously added - mouse unpress outside step button doesn't stop adding steps
After one click to the dialog everything works fine.
I think that this is maybe similar problem to https://bugreports.qt-project.org/browse/QTBUG-31488
- is replaced by
QTBUG-29782 QDoubleSpinBox does automatically steps up/down after mouse key press, move out and release.