Dear Maintainer,

gThumb removes already during the tagging of images all extended file attributes attached to the image, so called xattr.

You can check this by writing tags with "setfattr" and reading them with "getfattr". Or you can use the file manager Dolphin or the image viewer Gwenview, which lives from extended file attributes.

For security reasons, this incompatibility should be pointed out as early as possible. For example, in the package description, which describes gThumb as "advanced".