More specifically, it will download a few images by renumbering, but will then stop at (2) and save over the last downloaded image rather than continuing to number. I did not have this issue with Chrome, as it would continue to raise the number. Example: Save Image > pop-up reads "Congrats, unknown.png saved!" > repeat, pop-up reads "unknown.png (1) saved!" > repeat for unknown.png (2) >repeat, but still get unknown.png (2), with the last image now saved over with the new image. This is especially frustrating, as even after I move images to a new folder, rather than restarting or continuing the numbers it will continue to save over image (2). I work with a site that saves a lot of temporary images so the names are usually bland like this, I would appreciate FF continuing the numbering past (2) or allowing me to rename a file if it plans to overwrite.