Inside my signature column the picture inside a box wont show properly, instead in the preview in the settings page, it worked perfect... How do i fix that ?
There is a height limit on the signature field. There is an issue open on GitHub for the settings page not accurately reflecting how a signature will appear on the forums: https://github.com/ppy/osu-web/issues/2413
There isn't really a "fix" for this other than using a smaller image.