0135 Beta, OS 10.4.X, Apple
/* mouseX, mouseY, mousePressed are not updated at the right-bottom corner zone.
but are updated while dragging.
*/
void setup() {
size(200,200);
}
void draw() {
background(0);stroke(255);
ellipse(mouseX,mouseY,20,20);
if (mousePressed) println(mouseX+", "+mouseY);
}

i'm guessing you mean that the mouse stops updating once it leaves the
window. if you leave quickly, it will appear to stop updating mouseX/Y
30-50 pixels from the corner, since that was the last update that was
received from the os.

this is not a bug, this is simply an issue of how java cannot track mouse
movement outside the window (unless the movement is a drag, which begins
inside the window). the problem is how java interacts with the underlying
os, which cannot be guaranteed to pass mouse events when not inside the window.

>30-50 pixels from the corner
yes,
but
occurs with a slow move and within the window.
on the other hand
with dragging, always and anywhere updated even if the mouse is out of the window.

you can thank steve jobs for that. on os x, it's not updating in the
additional 10ish pixel square area where the grow box normally resides.

file a bug with apple (bugreporter.apple.com) if you want to see that change.

ok
i will post this bug report on bugreporter.apple.com

ok
i will post this bug report on bugreporter.apple.com