Dashed border around composite image (transparent background)

[vital_n]

Recently noticed a strange bug
When we place an image on a transparent background
a dashed border appears around it


Here's the code we are using

Code: Select all

<?php
$canvas = new Imagick();
$canvas->newImage(500, 500, new ImagickPixel('transparent'), 'png');
$im = new Imagick('im_src.png');
$canvas->compositeImage($im, Imagick :: COMPOSITE_DEFAULT, 20, 20);
$canvas->writeImage('im_dst.png');

ImageMagick 6.9.1-2 Q16 amd64
IMagick extension 3.1.2

Is it a bug or some behavior changed recently?

[snibgo]

Your image shows rotation that is not in your code. Your image is jpg but your code writes a png. Your image is 488x407, not 500x500.

[vital_n]

That's a screenshot, this forum does not allow to attach files
Th rotation is in the source file, it does'nt matter since the same issue we have with other images

[vital_n]

Here's the source png
http://printdirect.ru/tst/im_src.png
And here's te result of the code (there's no rotation at all )
http://printdirect.ru/tst/im_dst.png

[fmw42]

try upgrading to the latest version 6.9.1.6. I think this bug has been fixed in more current versions (6.9.1.4 or higher I think).

[vital_n]

Yes upgrade helped. Thank you )