unfocusedAppearance in "defaults" overwrites unfocused background in all profiles

[thgross]

Windows Terminal version

1.15.2874.0

Windows build number

10.0.19044.0

Other Software

No response

Steps to reproduce

use this in the "defaults" profile:

"unfocusedAppearance": {
    "foreground": "#a0a0a0"
}

and something like this in a profile:

{
    "background": "#101050",
    "guid": "{574e775e-4f2a-5b96-ac1e-a2962a402336}",
    "hidden": false,
    "name": "PowerShell",
    "source": "Windows.Terminal.PowershellCore",
    "tabColor": "#202080"
}

Expected Behavior

when the pane is out of focus, only the foreground-color should change to #a0a0a0.

Actual Behavior

when the pane is out of focus, not only the foreground-color changes, but also the background-color goes black.

[carlos-zamora]

This is actually confusing, but by design. The unfocused appearance in defaults inherits from the regular appearance in defaults. So when background isn't found in defaults.unfocusedAppearance, we go ahead and use the one in defaults instead. Assuming you have a background defined in defaults, this is probably what's going on.

If you're curious, here's the spec: https://github.com/microsoft/terminal/blob/main/doc/specs/%233062%20-%20Appearance%20configuration%20object%20for%20profiles.md

That said, we probably should mention this weird behavior over in the docs site.

[zadjii-msft]

Docs issue is MicrosoftDocs/terminal#610