Window is not centered vertically when "center" position is requested

[arudnev]

NWJS Version : 0.44.3 Operating System : macOS Catalina (10.15.3)

Expected behavior

Window should be centered vertically

Actual behavior

Window is centered around 1/3 of screen height, closer to the top

How to reproduce

rm -rf "${HOME}/Library/Application Support/nwjs-test" && \
cd /tmp && rm -rf nwjs-test && mkdir nwjs-test && cd nwjs-test && \
echo '{"name": "nwjs-test", "main": "data:,test", "window": {"id": "test", "title": "position test", "position": "center", "width": 200, "height": 200}}' > package.json && \
~/Downloads/nwjs-sdk-v0.44.3-osx-x64/nwjs.app/Contents/MacOS/nwjs .

or simply executing the following in dev tools console

nw.Window.open('data:,test', {id: 'dialog', position: 'center', width:200, height: 200})

[stale[bot]]

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