[magick-users] having a problem with rotation (transparent bg) after upgrade

[Stas Bekman]

Hi,

ImageMagick used to make a smooth image rotation before. Now I've
upgraded to the latest version 6.3.7 (same issue with 6.3.2), and now
the rotation leaves a jiggy outline

Here is the input file:

in.jpg
http://img2.freeimagehosting.net/image.php?b7174eb966.jpg

I run:
convert -rotate 5 -background "transparent" in.jpg out.jpg

here is the output:
http://img2.freeimagehosting.net/image.php?007de57566.jpg

can you see the border being all messed up now?

I need to use transparent background since the image is going to be
composited on top of other images.

Is there some extra argument that I need to add now? (which I'd imagine
used to be added by default in the past, but it's no longer the case)

Thank you for your help.

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