Prefabs does not update if you duplicate a prefab and then modify it
<p>This may not be an issue, but it sorta defy the purpose of having prefabs.</p>

<p>I have a prefab; then for various reasons, I did modify it. What I usually do is to drag the prefab in the scene, modify it and click the apply button to save the changes.</p>

<p>I did duplicate few times this prefab, modified one and did press apply button. Then I realized that all the other duplicates did not update accordingly.</p>

<p>Even the prefab itself, didn't update at all; I had to drag and drop the modified prefab on top of the original prefab icon to get that changed.</p>

<p>I do remember that in the past; each prefab would propagate changes, every time you modify one; and also, I recall that every time that you modify a prefab, you would get the warning, telling you that you are breaking the prefab. Which didn't even happen.</p>

<p>Did the prefab behavior changed recently? I didn't touch Unity since V3.0, so I may have missed some change in the editor, now that I am using 5.3.</p>