Description of my issue:
See image. After clicking on "view changelog" it looks like this. Changelog extends out of the popup frame (to a point at the bottom where it can't be read properly) and doesn't scroll. Not a major thing but figure i'd report it either way. This is on Win 10 pro x64 build 1511, using FF 48. The weird thing is that when the popup is open, the "blacked out" background does scroll.