Long time and very happy Mac user of Sourcetree here! Latest update has a change that I find jarring.
Sourcetree's ease of use is impacted by updating to 4.1 when Commit, Pull, Push etc -- very important buttons -- have moved so far away.
In 4.0 all the stuff is near each other in the left part of the GUI, Commit button above branches, stashes, etc. Very handy!

But in 4.1, the Commit button et al are so very far away, way off to the right (and you can't even see them in this screen shot):

The "Customize Toolbar..." option, while helpful, doesn't seem to let me arrange the buttons as I'd like to get everything over to the left. Am I missing something?