Strange display problem

I have a strange display problem. When the mouse is on the music, the display moves to the left until it is as far as it can go. when I move the mouse below the music, it stops at that point.
I changed mouse and it does the same. I changed music and it does the same. I can’t stop the music display moving in order to enter music.

Welcome to the forum, @bbeerma. I’m finding it a little hard to visualise the problem you are describing. Would you be able to create and attach a short video capture showing the problem in action so that I can take a look? If the video ends up being bigger than 4MB, you won’t be able to attach it here directly, but you can upload it to e.g. Dropbox or another similar cloud storage provider and then post a link here.