Or more specifically, the "Show Collections" section of the Cited By Panel does not scale. Even if I Float the Cited by Panel and make it full screen, it is virtually impossible to make changes in the Show Collections section, because there is so much there!
Try moving/changing the order of the Collections by dragging - first you have to find it, then drag it to another section. Even when maximized on my screen, only 6 collections show - given that I have hundreds of tags, which show as collections, and additionally many collections, this just does not work well at all. It can take minutes, being prone to mistakes, to drag a collection to the top of the list, for example.
Given that only 6 show of hundreds, it can be very difficult to find the collection I am looking for - they are not alphabetized, I don't know how the order is determined, and there are no filter or search tools - and scrolling through a huge list when only 6 show at a time is extremely problematic.
You are somewhat forced to go in here as well, if you add Collections - the default seems to be to add any new Collections in here, so you may have to turn them off in the Cited By tool if you don't want new collections to show - and they don't always seem to be located at the bottom of the list! I don't know how it decides where to place them in this list.
This section needs to provide much better tools to find, sort, edit and change order, to keep up with libraries that are growing, along with growth in numbers of collections and tags. Thanks.