I intentionally set the group name for not to be shown.
In fact, both the group name and description were hidden.
Which is perfectly fine.
But then you can't put your Javascript in the group description, because it won't work. Put it into the first question of each group and you should be fine.
Help us to help you!
Provide your LS version and where it is installed (own server, uni/employer, SaaS hosting, etc.).
Always provide a LSS file (not LSQ or LSG).
Note: I answer at this forum in my spare time, I'm not a LimeSurvey GmbH employee.