Thank you for reporting it. I tested it and I confirm that it is a theming bug so I will apply a fix for the next patch version of the theme. The general problem is that the scale element does not render as it should.
Good thing is that webforms offer a big range of alternative elements that can be used so until then, I propose the following changes:
Overall, how would you rate your Summer Student experience at CERN?: You can change this question to a rating element (stars)
How likely is it that you would recommend our internship programme?: You can change this to a Likert element
Many thanks for looking into the matter. When would you expect the issue to be fixed? If it’s in a week time, I can definitely wait. Otherwise, I am happy to use a different element type, no problem with that!
Unfortunately it will take some time since the fixes are deployed “in packages” every couple of months (approximately) and the last deployment was last week.
I understand what you mean by that and it is already requested by other users too so we will try to find a solution. For now it is not possible though so the best you can do is redirect the users to the page and then they can visit the indico event if needed.