Quote Originally Posted by AlexiaKidd View Post
I know it isn't ideal but there is a program called Shift Window that can be used to force FFXIV into Fullscreen so no borders while in Windowed mode. Google it and give it a try until SE can sort this out, that is if they ever sort it out.
I haven't tried this yet but I've used Shift Window for other games such as League of Legends and it works well. So I recommend at least giving it a go.