Issue with Theme One

Dear all,

I am having an issue with the dark mode toggle and Theme One (https://github.com/AmjadHD/sublime_one_theme/).

In my settings, I have

```json
/*"theme": "auto",*/
"dark_theme": "One.sublime-theme",
"light_theme": "One.sublime-theme",

/*"color_scheme": "auto",*/
"dark_color_scheme": "One Dark.sublime-color-scheme",
"light_color_scheme": "One Light.sublime-color-scheme",
```

and a keybinding (F12) to `toggle_dark_mode`. My system default is light mode.

Now, when I manually configure

```json
"color_scheme": "auto",
"theme": "auto",
```

the editor shows up in light - as it should - and hitting F12 turns it to dark mode. I can see that the settings are altered to

```json
"color_scheme": "One Dark.sublime-color-scheme",
"theme": "One.sublime-theme",
```

Now, however, hitting F12 again does *not* switch back to `auto`, neither to the light variant - I am stuck in dark mode.

Is there anything I'm doing wrongly here?