I can reliably recreate this using today's latest updates (9 march) simply by clicking on a dock icon, dragging it out and down then releasing it.
https://bugs.launchpad.net/ubuntu/+source/unity/+bug/732357
I can reliably recreate this using today's latest updates (9 march) simply by clicking on a dock icon, dragging it out and down then releasing it.
https:/ /bugs.launchpad .net/ubuntu/ +source/ unity/+ bug/732357