dellus wrote

If you click into the hatched area, does it get highlighted? NO
Then there must be something. Also try "Properties", what does it say? For me it looks OK
Try changing colour with "Attributes".
In the command line, after "Hatch created successfully", is the hatched area indicated? NO
Is the active layer different than the layer with the rectangle, and is switched invisible? same layer, visible
Then you will not see the hatching until you switch it to visible.