"Mouse follows focus follows mouse" should not be possible

Selecting both (ON="Mouse follows focused windows" && ON="Focus follows mouse") makes it impossible to interact with many popups, particularly Mac OS menu and task bar items. Easy to test because the "Amethyst Preferences..." dialog itself can trigger the issue.

Reproduce:

Open TextEdit.
Select "Amethyst Preferences..." from the menu bar.
Select both "X follows Y" options under the "Mouse" tab
- [x] Mouse follows focused windows
- [x] Focus follows mouse
Close "Amethyst Preferences..." and (try to) open it again.

Expected:

Should be able to open the "Amethyst Preferences..."

Actual:

One cannot. Even before selecting "Preferences..." from the menu dropdown, the mouse will focus to the centre of a window (like voting for the wrong American candidate).

Work around:

Open or move to a Desktop Space with no windows
Don't set both "Mouse follows focused windows" and "Focus follows mouse" simultaneously.

Suggested bug fix:

I think it should be impossible to select both. Rather than two checkboxes offering four permutations, I suggest three radio (select one option only). "Mouse follows focussed windows" XOR "Focus follows mouse" XOR "Default no re-focusing" (where "both mouse follows window follows mouse" does not exist and cannot be configured).

If booleans must be used in the configuration file, then selecting both should trigger an error and (assume default or not load/set config at all).

Versions:

macOS: M2 Ventura 13.4.1 (c)
Amethyst: 0.20.0b3 (106)

Version: 0.20.0b3 (106)

OS version: Version 13.4.1 (c) (Build 22F770820d)

Screens:
    (0.0, 0.0, 1496.0, 967.0) [(0.0, 0.0, 1496.0, 967.0)]

Configuration:
layouts: (
    tall,
    fullscreen,
    wide
)
focus-follows-mouse: 1
restore-layouts-on-launch: 1
smart-window-margins: 0
window-margins: 0
window-resize-step: 5
window-margin-size: 0
enables-layout-hud: 1
follow-space-thrown-windows: 1
new-windows-to-main: 0
screen-padding-bottom: 0
window-minimum-height: 0
window-max-count: 0
screen-padding-left: 0
window-minimum-width: 0
floating: (
)
mouse-resizes-windows: 0
screen-padding-right: 0
mouse-follows-focus: 0
mouse-swaps-windows: 0
floating-is-blacklist: 1
debug-layout-info: 1
ignore-menu-bar: 0
use-canary-build: 1
float-small-windows: 1
screen-padding-top: 0
enables-layout-hud-on-space-change: 1
mod2: (
    option,
    shift,
    control
)
mod1: (
    option,
    control
)
mod3: (
    shift,
    control
)

ianyh / Amethyst