Using Movie Studio 17 Platinum, but I've had the problem with earlier versions.
Whenever I create text that is to scroll-in/fly-in from off screen, I cannot get the start point to be offscreen. For instance, Note the first text is visible before it does the fly-in.
I have tried to make it not do that, without any luck
It is made with VMS17 Pl and "Text and Titles/ Fly in" in combination with Pan/Crop with keyframes. If you want to stop the movement you can cut the textfile and enlarge it a bit with your last choosen frame.