Image upload: colors get mixed up with BGR color model

We discovered a problem with certain JPEG images where the colors get really mixed up after uploading into the CMS. See attached 'before' (image-original) and 'after' (image-downloaded-from-CMS) files. (The original is quite big but a scaled down version does not have the problem).

In a 7.7.1 debug session, we got to org.imgscalr.Scalr.createOptimalImage where the image type of a new BufferedImage is set to either BufferedImage.TYPE_INT_RGB or BufferedImage.TYPE_INT_ARGB. But the originating image has a type BufferedImage.TYPE_3BYTE_BGR so a wrong type is applied which messes up the coloring.

So, it seems that the file's colors are not stored RGB but BGR, a different color model (or color space) in which the blue is written first. Upload of these type files is not well supported.

This is confirmed on CMS 7.6.2, CMS 7.7 and CMS 7.7.1 (also cms.demo.onehippo.com) so it occurs with the Scalr library as well as with previous implementation.

[edit after creation]
So it seems that this JIRA has the same problem, the thumbnail generated from "image-original.jpg" has mixed up colors!