Crash with Windows UI scaling and window positions 'center' and 'mouse'

[sysrage]

NWJS Version : 0.44.4
Operating System : Windows 10 x64

Expected behavior

The window should appear centered in the screen, when position: 'center' is used. The window should appear at the mouse cursor, when position: 'mouse' is used.

Actual behavior

When a package.json manifest contains position: 'center', the application never starts when NW.js 0.44.4 is being used. Additionally, if the manifest contains position: 'mouse', the window shows in the top-left of the screen (not where the mouse is).

Downgrading NW.js back to 0.44.3 immediately resolves both issues. Running NW.js 0.44.4 with --disable-features=nw2 also resolves the issues.

How to reproduce

nw.Window.open(startUrl, { position: 'center' }, (mainWindow) => {});

OR

nw.Window.open(startUrl, { position: 'mouse' }, (mainWindow) => {});

[sysrage]

This issue should block issue #7230.

[gpetrov]

Maybe this is related to the crashes we are experiencing as well: see #7412

[rogerwang]

@sysrage I tried the code by opening nw and enter it in the devtools. It works for me.

Please provide a sample so I can reproduce the crash, thanks.

[sysrage]

There might be something strange going on, as the following code has not failed once or twice in my testing. However, it usually does fail (tested on two computers). Also, passing the --disable-features=nw2 parameter is no longer fixing the problem. Once it starts failing, it continues to fail until I remove position: 'center' from main.js.

package.json:

{
    "name": "nw-fail",
    "main": "./main.js",
    "homepage": "."
}

main.js

nw.Window.open('./index.html', { position: 'center' }, (mainWindow) => {});

index.html

Any HTML Here.

[sysrage]

I believe this issue is related to Windows UI scaling. If I have "Change the size of text, apps, and other items" set to 175% in Display Settings, NW.js crashes with position: 'center'. If I set scaling to 100%, the window opens just fine.

I can consistently reproduce this with 175% scaling on two computers:
1 - Windows 10.0.18363.720 and NVIDIA Quadro driver 432.13 (1x 4K Monitor)
2 - Windows 10.0.18363.720 and NVIDIA GeForce driver 442.50 (2x QHD Monitors)

[sysrage]

This behavior appears to be resolved with the 0.44.5 test build mentioned in Issue #7412 (https://dl.nwjs.io/live-build/nw44/20200316-123559/b37f3d15b/v0.44.5/).

[rogerwang]

Close as the fix is released in 0.44.5