I have installed 17.04 and I have encountered the following problem:
The default menu installed during the installation does not launch Kdenlive. The Brisk menu that I have installed also does not launch Kdenlive.
The menu called Main Menu from the Add to panel menu does launch Kdenlive. Plank also launches Kdenlive. I still have 16.04 installed on another partition and there no such problem.
So it seems that there is no problem since I have two options to launch Kdenlive but is it not a bug?