It doesn’t “read” how many images are in the scroll list, like it does for example in yt, when it becoming smaller if the comments section is large.
It always stays pretty big to emulate the right behaviour of getting from start to end of scrollable area. When fully functional scrollbars will be available? I haven’t figured how to make them for my site project rather than make fake ones (basically making background element of scrollbar in scrollables and front element in fixed).
