Slider doesn't allow user to do next if the default value is the value the user wants to input

[LarsRefsgaard]

In above image, if user wants to input 0 the user must move the slider away from 0 then back to 0. Maybe just allow next to be pressed immediately?

Also for the user to more easily understand that it is a slider, maybe a default value could be useful? For example in this mood slider you don't want to "assume" that the user is in a bad mood, but rather in a neutral (50%) mood.

[MadsVSChristensen]

Forcing the user to move the slider is a way of guaranteeing that the user answered a certain value and not just moved on. It can seem unnecessary but how much can we then trust the starting value if the user are able to skip the question by just pressing Next.

The default value for a slider is a nice enhancement. It will be part of a future release.