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When ImageMagick is the image processor...

During the processing of an uploaded animated gif avatar, the frames of the gif get coalesced (Imagick::coalesceImages) but Imagick::deconstructImages doesn't get called after Imagick:: optimizeImageLayers gets called, resulting in a huge file size increase over the original (an order of magnitude from my personal testing on a few gifs).

I tested a fix by slipping

[code]$this->_image = $this->_image->deconstructImages();[/code]

into XenForo_Image_ImageMagick_Pecl after the optimizeImageLayers call and the resulting gif was similar in size to the uploaded original.

References used when hunting down the issue:

http://php.net/manual/en/imagick.coalesceimages.php#110393

https://stackoverflow.com/questions/18559132/imagick-making-animated-gifs-not-animated/19469380#19469380