When adding shapes (e.g. a rectangle or a connector) or trying to edit the controls points of a connector, the mouse cursor disappears. It is perfectly possible to draw the shape, but its very annoying not to know where it will be drawn.
Steps to reproduce:
* Start Draw
* Select Rectangle Tool from Toolbar
* Move over Drawing area: the mouse cursor is no longer visible
* Prepare a drawing with two rectangles and a connector between them
* Select the connector
* Move the cursor over one of the connector's end points: the cursor disappears
Note: when drawing the rectangle, during mouse movement, a cross-hair cursor is shortly visible but disappears as soon as you stop moving the mouse.
Not only a Draw problem.
*** This bug has been marked as a duplicate of bug 91485 ***