Hey there,
I made a very simple test scene and one of the basic things it's supposed to do is lock the cursor so it doesn't "break out" of the window when clicking a lot (as you might in an FPS for example).
However, even though the PlaymakerGUI is controlling the cursor and the "Lock Cursor" is ticked in the "SetCursor" action it still escapes the borders of the window/full screen instance.
Any idea why this might be happening?