set angle with black "background"

[Wilhelm Sanke]

I noticed that when you set the angle of an image other than 0, a black
"background" rectangle is produced fitting the 4 rectangle points of the
tilted image - even when 3D and showborder are set to false. This is in
the latest (Windows)-Metacard version of April 16th.

Version 2.4.2B3 did not yet have this problem, but apparently all
versions after that.

Regards,
Wilhelm Sanke