Scrolling through instrument editor unintentionally changes values

When editing an instrument:

Expand all group boxes, so that the scrollbar appears

Scroll the editor with the mouse wheel

When by this scrolling a combo box or a spin box arrives under the mouse, the next mouse wheel events change the value of this combo or spin box.

Expected: The scrolling goes on, no values are changed

This happens often and easy, sometimes even unnoticed, and the value changes can`t be undone, therefore I set the label "release critical".

Hint for solving:
One could add the wheel eater at any used spinbox / comboBox. Better would be to just use the predefined routines to create them (e.g. WidgetUtils::createSpinBox() or DoubleSpinBox::DoubleSpinBox()).
Also take a look at WidgetUtils::createSelectionCombo().