.array changes the order

[xtreak via Digitalmars-d-learn]

I came across the issue where using .array after .joiner caused 
the changes to the output. The program is at 
https://dpaste.dzfl.pl/0885ba2eddb4 . I tried to debug through 
the output but I couldn't get the exact issue. It will be helpful 
if someone confirms this as a bug.