Adwaita has some aggressive padding in xfce4-panel. There was a update in whisker fairly recently that forced the icon padding to 0. There's probably some leftover patches in Greybird that also adjust this padding.
+ochosi -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1756612 Title: Launch and Directory Menu items icons are too small To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xfce4-panel/+bug/1756612/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs