Odd behavior of darray.dup

[solidstate1991 via Digitalmars-d-learn]

If I want to copy an array of structs with .dup (cannot post the 
link in question here at the moment due to non-working clipboard, 
it's Color from pixelperfectengine.graphics.common) I get all 
zeroes instead of the values from the original array. I haven't 
disabled post-blit to my knowledge.

Is it some kind of a bug, or the .dup function has some behavior 
that's not currently documented on the site (such as needing a 
copy constructor)?