In MODx 2.8.8, I have a ContentBlocks gallery and accidentally uploaded CMYK images which created off-color thumbnails. So I deleted the source images and my phpThumb cached images.
Inside the manager ContentBlocks shows a missing image, but if I refresh the public facing page, the off-color thumbnail still exists and a new thumbnail is generated and dropped into my phpThumb cache folder.
I did try deleting the images from the gallery, reuploading the fixed images, and readding them to the gallery. That didn’t help. It still creates the off-color image in the front facing page. If I create a duplicate image with a different file name it builds a proper colored thumbnail.
How is it regenerating the off-color thumbnail when the source is missing?
Or if this is something going on with phpThumbof, where might I look to find the problem?
I discovered something else interesting. If I disable phpThumb Resizer in MODx settings it will generate a new thumbnail with the proper color. The source file is still removed, so I have no idea how it is creating new thumbnails. If I turn resizer back on it regenerates or repopulates the off-color thumbnail again into the phpThumb cache folder.
I don’t know if this is a result of adding media source images to a ContentBlocks Gallery, or some kind of standard MODx media source feature? It seems like a waste of space to cache the full image which never gets seen by the public.