Please help us help you and fill where relevant:
Your LimeSurvey version: 3.15
Own server or LimeSurvey hosting: Own server
Survey theme/template: Fruity
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I have a survey with a rather large number of questions where I enabled the question index because I want the respondent to be able to jump between questions.
When I test this I can see half of the list of questions because the list is too long but I can't scroll down in the index list. (see screenshot - questionindex1.jpg)
I already tried different browsers but the result is the same.
What I'm I doing wrong?

I could zoom my browser screen to 50% which reveales the rest of the list but surely this can't be the intention. (see screenshot - questionindex2.jpg)

Thanks in advance,

I recommend to check with LS 3.28.5 and if you still have that issue you might report that as a bug.