In T97787#1351179, @Bastien Montagne (mont29) wrote:

I think writing a small python script going over all your image data-blocks to ensure they do have a unique filename should be fairly simple?

In T97787#1350889, @Bastien Montagne (mont29) wrote:

The problem here is that unpack uses the stored file name, not the ID name.

Your blue image has a path of //test\1.png, while your grren one has a path of //1.png. So they both have the exact same file name, just a different path... which is ignored/discarded when choosing one of the current directory unpack options. The original location options work fine though.

Even though this may not be ideal, there is no bug here, code is behaving as expected.