Yes it looks a little bit 'lite' but we did not want to have 2 buttons with the same look but two different kinds of actions. Hierarchy button changes the window itself and variable and scoped open a new menu or window.
I agree about the class side button.
Date: Sat, 1 Aug 2015 12:26:02 +0200
From: i.uhnak@gmail.com
To: pharo-dev@lists.pharo.org
Subject: Re: [Pharo-dev] Nautilus new buttons not buttons?
Speaking of buttons... The Hierarchy/Flat button and [] Class side isn't entirely consistent either.
And since everyone is used to it by now nobody will want to change it. :)