There is a third party patch at http://sites.google.com/site/bb1001dd/linux-hacks-and-patches/gnubiff-gtkstatusicon-patch The patch works fairly well for me with a png image with transparency, but I'm not enough of a coder to evaluate or review it.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/252526 Title: Transparency of tray icon does not work -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs