Discussion board where members can learn more about Qlik Sense App Development and Usage.
It's not possible to disable this at this moment. Though you could try the Vizlib Sheet Menue extension to see if this is possible: https://www.vizlib.com/protected/downloads#
thanks for your answer. I am using this extension as well and as you supposed, this menu is not visible in the sheets. But it is visible, when I open the app overview. It is shown as in the png file I posted before.