Thank you for the hint and the patience.
The Update 3.2.30 fixes the focus issue for scale batteries - I assume that is what you meant by "group of dropdown select boxes" - and in other questions. In the scale question the issue also affected the radio-button-input view of the scale.
The update hat been installes on www.soscisurvey.de (s2survey.net received updates with some delay). I woudl appreciate feedback if the update did not work for your questions like expected. In that case please also specify the question type you are using.