I can confirm this (up-to-date edgy) -- the missing pixel line is on the left (not on the right) here.
Not sure where this comes from. The icons themselves look fine, for example /usr/share/icons/hicolor/48x48/apps/deskbar-applet.png A clue: maybe the default icon size for the dialog is not a standard one (it seems to take the 48 versions of icons, but they're definitely not displayed that big), and the resizing is not optimal? ** Changed in: gnome-panel (Ubuntu) Status: Unconfirmed => Confirmed -- Icons visualization problem in add-to-panel dialog https://launchpad.net/bugs/57962 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs