I have the same problem. The package installed in my computer is: 59.0.1+build1-0ubuntu0.16.04.1
This package puts icons of several sizes in: /usr/lib/firefox/browser/chrome/icons/default but it only puts one icon in the directory /usr/share/icons/hicolor namely in: /usr/share/icons/hicolor/128x128/apps/firefox.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1756501 Title: Ubuntu Firefox Desktop icon is HUGE (about 5 times normal) after update to 59.0 (64-bit) Ubuntu canonical build, can't resize by any normal method. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1756501/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs