Yabai Sometimes Puts Windows Below Other Windows

I’ve been using yabai on my company’s MacBook and noticed it sometimes places windows below others, a behavior not observed on my personal MacBook.

By running yabai -m query --windows, I discovered differences in window layouts between the two machines:

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[
    {
        "id": 140,
        "pid": 1087,
        "app": "iTerm2",
        "space": 2,
        "level": 0,
        "layer": "normal",
        "opacity": 1.0000,
        "split-type": "none",
        "split-child": "second_child"
    },
    {
        "id": 97,
        "pid": 1012,
        "app": "Discord",
        "space": 5,
        "level": -20,
        "layer": "below",
        "opacity": 1.0000,
        "split-type": "none",
        "split-child": "second_child"
    },
    {
        "id": 120,
        "pid": 1062,
        "app": "Mail",
        "space": 4,
        "level": -20,
        "layer": "below",
        "opacity": 1.0000,
        "split-type": "none",
        "split-child": "second_child"
    }
]

The windows should all be in the normal layer. This led me to find this issue: Everything as Normal Layer #1912.

The solution is to run yabai -m rule --add app=".*" layer=normal to set all windows to the normal layer in yabai v6.0.3.

Version comparison revealed that my company’s MacBook is running yabai v6.0.3 while my personal MacBook is on v5.0.