GridLines missing using SciDraw

Does anybody know how to include standard GridLines in SciDraw? I found this but it doesn´t really answer the question. Here my minimal example reproducing the problem:

Figure[
  FigurePanel[
    {FigGraphics[
      Plot[{x, x - 2, x + 2, 2 - x}, {x, 0, 4}, 
      GridLines -> Automatic]
    ]}, XPlotRange -> {0, 4}, YPlotRange -> {0, 4}],
  CanvasSize -> {5, 3.5}*1.3
]

There are no GridLines in my output. However, simiply using the following
Plot[{x, x - 2, x + 2, 2 - x}, {x, 0, 4}, GridLines -> Automatic]
results in normal expected gridlines in the plot.

Thanks in advance.