Comment 2 for bug 1495204

Simple workarounds (to compensate the 'translate()' transformation on the parent layer):

1) apply voronoi pattern
2) select rectangle, switch to the node tool
3) drag the 'X' of the pattern handles and snap it to the top-left corner of the rectangle

or

1) add a new layer
2) move rectangle to new layer
3) nudge the rectangle with the arrow keys (e.g. a tick to the left and one back to the right) to optimize the translate() transformation into the shape parameters.
3) apply voronoi pattern