Signup form shows both captcha questions instead of just one

[goapunk]

URL: https://meinberlin-design-dev.liqd.net/accounts/signup/?next=/
user: no user
expected behaviour: the captcha only shows the correct question (either the image picking question or the text question)
behaviour: both questions are shown, although only one (the image question by default) should be shown
important screensize: any
device & browser: any?
Comment/Question:

Screenshot