There's no question there is a difference in windows on your system.
Attached find <snip> of CCleaner on Win 10 Home and you'll see the blue bar on the top of the snip which does not appear on CraigB's system, which is also Win 10. This system is an upgrade from Win 7 Home Premium, which might account for the difference.
Point however, is that the visual window differences (gui) should not affect how CCleaner runs and operates on either the Vista system or the Win 10. And, to me, that would be the determining factor, whether the newest version works as it should, rather than how a window appears on either Win 10 or Vista.
I'd likely put the issue you are seeing down to inadvertent user customization/appearance/basic theme settings, with one of them directly affecting windows explorer windows.