With the New Debug Options ( F3 + F6 ) you can choose if you want the debug screen text off, in overlay and always on.
Because that when you activate more Debug Screen Text the player position ( XYZ Coordinates ) goes to the right wich is terrible because in all version without the debug options the player position is Always on the Left so it will be Really Nice if we can choose where the player position is on the Screen or make it so it is always on the left.
For suggestions, please use https://feedback.minecraft.net/hc/en-us website. This is not a bug.