Garrett,
I have tried this on 3 computers using the public beta version all with the same result. Your program didn't cause it on mine either but the mouse was never even over the grid.
This program will cause it, just run this and then move your mouse (manually, not with code) around on the grid. You will (should) soon get the problem.
USE HOME(1) + "labels"
lox = CREATEOBJECT("Form")
lox.WindowType = 1
lox.AddObject("Grid", "grid")
lox.Grid.Visible = .t.
lox.Grid.MousePointer = 1
lox.Show(1)
Cheers,
Chris.
Have a nice day :)