I’m using Ubuntu 17.04 with Unity and my Sublime is on build 3126, when I open sublime by clicking on the icon in the dash it looks like this (don’t mind the theme I tried on vanilla Sublime Text and the problem remains)
, and this is what it looks like when opened with subl .If sublime was opened clicking the icon, running subl with no args simply brings sublime on top of my desktop without changing the top bar.