Some applications raise even though autofocus is set

I have just installed yabai with a minimal setup (to use "focus follow mouse" feature, without auto raise):

```
yabai -m config focus_follows_mouse autofocus
```

It works great, except for Firefox (at least that's the only application I've noticed so far). In addition to getting focused when being mouse over, Firefox also get raised.

Any idea why/how to fix this?

Thanks,

Reproduce the behavior with `yabai -m config focus_follows_mouse autofocus`, first comparing Firefox with other applications while moving the mouse between windows. Investigate the focus and raise behavior reported by the issue; done means Firefox focuses on mouse-over without being raised, while auto-raise remains disabled.

Written by the indexing model from the issue text.