Well, suddenly my clipboard, where all my files hangaround, just changed to this weird look. I can not do the easy fade overs anymore. I tried resetting Magix Edit Pro 15 but didn't work. It looks normal when editing other videos weirdly enough.
I think you have clicked the track height adjusters (1) shown in the image below, click the height adjuster (2) will return the track heights to their maximum.
Please use the full name of the program - Movie Edit Pro 2015 ( or abbreviate to MEP2015 ) to avoid confusion with the older version 15.