If i edit an jpg image, set the background color to white (or any color) and crop the image to be larger than before, i would expect the new area to be the color i selected. It is even the selected color in the preview when saving but the end result is always filled black.
My advice: don’t use these “tricks”, I think they don’t work very well (and it’s not concrete5, all the tools of this kind proposed in CMS do the job rather badly), and modify the images with a “real” image editor (like gimp) then use them with the file manager, there you’ll have 100% control
I just saw that my webM was cut and the essential part was not shown so here is a (heavy) gif to show it.
I don’t want to do anything with transparency. I want to have the output that is shown while editing the image to be in the actual saved image. Now the editing shows white (or any other color) but the result is always black.