Comment 15 for bug 873167

Another example of why confusing icons of applications to be launched with icons of existing windows is wrong:

you should be able to do these as two different actions, both useful in different situations:

A. drag an object over the icon of an open window, so the window is brought to front, and then you can drag the object into a particular point of the window to handle it

B. drag an object over the icon of the same application, in order to open a new instance of that application to handle that object, as you would do if there was no existing open instance of that app.

In other words, the icon of the app as a launchable app should be separated from the icon of an existing open window of that app. As it had always been in gnome.