while fedora defenetly is not my cup of tea, first thing i do when i get a new system(desktop or laptop) is disable legacy bios/CSM whatever it is labeled as. This is to prevent mirriad of issus BIOS brings including its horrible MBR. GPT is million times better and for someone who dual boots on many machines (and has a drive with 14 different operating systems as a test) to all you legacy BIOS and MBR fans MBR doesnt cut it and is cause of many headaches if you dual boot.
Remember how some people have had issues with windows destroying booting of linux that is due to MBR being a useless piece of antiquated software and breaking. It wasnt windows's fault its just that its update utility had to overwrite a part of MBR and since MBR was already basically a house of cards all you had to do to break it is have a little mishap and your linux boot is gone (it was same on other side just less people were crying about it because well they blamed windows for breaking itself)
Remember how some people have had issues with windows destroying booting of linux that is due to MBR being a useless piece of antiquated software and breaking. It wasnt windows's fault its just that its update utility had to overwrite a part of MBR and since MBR was already basically a house of cards all you had to do to break it is have a little mishap and your linux boot is gone (it was same on other side just less people were crying about it because well they blamed windows for breaking itself)