What does your feature entail? What is it for? How will it affect existing workflows or user experience?
You can't report bugs for kagifeedback.org, the option is missing there
What are the exact ways that you see a user using your proposed feature? Please go into as much detail as possible, and provide examples of how other browsers/apps implement this feature, if applicable. If your feature suggestion adds on to an existing feature, how would it work into it to extend its usefulness?
Properly report kagifeedback bugs