Less than six cell freezen and scrollToTop buggy.

Is it a maintaining project? I found out two places that is not good for user interface. One is the collection is not scrollable when cell number is less than six or seven. I hope it can be like bounce affect even if so. second one is when i touch the top of the screen. it goes back to top, but get a gap between first cell and large title, it looks a bit ugly. i hope it can be fixed. thx