Remove black border on MultiEffect shadow

[GreatKahir]

Hey,
using Qt6 QML I want to create neumorphic effect for my UI.
I've write this. but what is that black border on my shadow effect?! how to remove it?

    Rectangle {
        x: 500
        y: 150

        width: 500
        height: 200                

        color: "#E0E5EC"
    }
    MultiEffect {                
        source: rec
        anchors.fill: rec
        anchors.margins: 5
        shadowBlur: 0.5
        shadowEnabled: true
        shadowColor: "white"        
        shadowHorizontalOffset: -15
        shadowVerticalOffset: -15        
    }

[GreatKahir]

🤔 No idea?

[mzimmers]

@GreatKahir it appears to be influenced by the shadowBlur property - making the blur smaller reduces this, though I wasn't able to make it disappear completely.

This is on Windows, using Universal style (I also tried Fusion). It's possible it's a bug; you might want to file a bug report on it.

[chrizbee]

@mzimmers Offtopic: Would you mind sharing your "Shadow Configurator"?

[mzimmers]

@chrizbee I don't mind at all. I put a file in gisthub - not sure I did this right. Let me know if you can't access the link.

https://gist.github.com/mzimmers/1ce460d10f1898aaf4184874ec014fb0