We have a list of items for a chart legend, and some other lists where there are items hidden below. We have several areas in the UI where we have a constrained space, and items that are hidden below.
Our current solution is that on hover there's a scrollbar visible, plus we have a white to transparent gradient at the bottom, so the last it fades, to suggest the list continues. We're in the process of refining this gradient...
There are suggestions and pressure (not from users!) to put buttons at the bottom to make it explicit that you can scroll down, but that is adding more chrome to the UI, which I don't want to do. We already have a good amount of chrome that's necessary, but I don't want to add more controls if possible. I am wondering if I'm leaving some other options on the table.
I'm sure people have come across this before. Any help on subtle (or other) solutions are welcome.