rotating difficult due to ´double´ clip

Hello I am new to kdenlive. I wanted to rotate a an image; but the problem is more or less that once I add a clip the clip is doubled in the video track one way or another. So I can drag another equal clip from behind it.

That is quite a problem when I want to rotate something, due to the time band you are working on when rotating.

What is the use of this doubled clip in the videotrack and how can I avoid it?