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NW2: User Window Metrics Not Saved/Respected

See original GitHub issue

Environment

NW.js Versions: 0.43.6 and 0.44.0 - reproducible on tag/nightly SDK/non-SDK builds.
Nightlies Tested: 20200117-051334 and 20200117-162000, respectively.
Tested Operating Systems: Linux (x64) and Windows 10 (x64).
Related Issues: #7230

Expected Behavior

NW2-mode windows should remember their last position and size upon launch.

Actual Behavior

NW2-mode windows (with window.id) don’t remember their last position and size upon relaunching NW. Windows are spawned at (0, 0) on the primary display with the initial size as specified in the package manifest.

A non-null window.position in the manifest is honored, though, it obviously has no effect on the initial size.

Reproduction

Manifest Bundle

nw1-nw2-manifests.zip

Demo (click for full size)

issue-capture

NW1 Manifest

{
  "name": "nwjs-window-position-history-nw1",
  "version": "1.0.0",
  "main": "data:,NW1 - OK",
  "chromium-args": "--disable-features=nw2",
  "window":
  {
    "id": "main",
    "width": 640,
    "height": 480
  }
}

NW2 Manifest

{
  "name": "nwjs-window-position-history-nw2",
  "version": "1.0.0",
  "main": "data:,NW2 - Fail",
  "chromium-args": "",
  "window":
  {
    "id": "main",
    "width": 640,
    "height": 480
  }
}