This happens when you have to many markings installed, and by the looks of it, you have MM3. There's no known way to fix this - It's just a glitch in the markings .cfg file. When there's to many entries, the markings start to repeat. You could either remove MM3 temporarily, or move your markings's code farther up the .cfg, and not at the bottom to test it. :) Good luck~
Also, this should go in game help - I'm sure someone will swoop along and move it for you.