Arguments of position invalid when Launch Game on UE4Editor in the command line.

Arguments of position invalid when Launch Game on UE4Editor in the command line.
Once displayed at the argument position. Then move to the center.

I tried it in 4.13 and it displayed correctly.

1. Launch Game on UE4Editor in command line.
UE4Editor.exe "QAGame.uproject" -game -ResX=1280 -ResY=720 -WINDOWED -WinX=100 -WinY=100
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2. Once displayed at the argument position. Then move to the center.
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