Hi, here are some examples of KDE windows to demonstrate the issue:

These windows have got the top right icon:
1) http://feinstaub.github.io/struct/img/t ... anager.png
2) http://feinstaub.github.io/struct/img/t ... sma5-1.png
3) http://feinstaub.github.io/struct/img/t ... sma5-2.png
4) http://wstaw.org/m/2014/11/25/plasma-desktopQa9434.png

These windows don't have the top right icon:
5) http://worldofgnome.org/uploads/2013/04 ... fault1.png
6) http://feinstaub.github.io/struct/img/t ... apshot.png


To someone who does not know the KDE internals, there is no clear pattern when the icon is present and when not - except when the icon is used like in picture 4).
In picture 1) the icon could be confused with a push button.
In picture 3) the icon even looks like an edit button for the title text.
In picture 4) we have the same icon twice: large on the left side and smaller in the top right corner. Where should the user look, left or right? I would say left, because the icon is bigger and also has text.

In my view, the top right icon does not add usability or clarity, so my suggestion is to remove it.

(The icon was first added here http://lists.kde.org/?l=kde-commits&m=1 ... 104683&w=2. Follow up commit here http://lists.kde.org/?l=kde-core-devel& ... 127277&w=2)

Besides the fact you confuse kcm's with normal applications, I agree. I suggested removing this icon, but got no reply in the resp. thread.
There is simply no reason to have this icon imho, since in the kcm, it uses the same icon as in the sidebar in the left and it introduces clutter without any easily recognizable benefit.

A patch that removes the icon can be found here: https://git.reviewboard.kde.org/r/121379/

I do applaud the idea and OK'd the patch. The edit icon is one of clear ways to confuse users that the page is editable: http://feinstaub.github.io/struct/img/t ... sma5-1.png - is pretty familiar pattern in various web UIs.

PS: Maybe we'd want this pattern more used in KDE?

Comitted here: http://quickgit.kde.org/?p=kwidgetsaddo ... b20e5912e6