Meet a problem when I export grouped rectangle

Normally I can export a black rectangle whose size is 1010 , it’s ok.
But if I draw a white line whose size is 1
5, and group it with the black rectangle.
Then I export the grouped rectangle. I meet a problem as followed:
The size of the grouped rectangle is 11*11 and there is a grey line around the rectangle.
I want to know whether it’s a bug or I make some mistake? My Lunacy version is V5.9.
Please reply me with email, thanks very much.

Hello,

We have just released the upgraded version of Lunacy (6.1) that has new fixes. Please install it, it should help.