I'm not what is being focused and I don't know how or whether QS is coming to the front because I have it set to appear with cmd+space in the menubar. But when I quit QS the erratic switching between apps stops. And unless I have turned into a cat, there's nothing other than my paws, er I mean, fingers are typing on my keyboard.
I first thought it was an issue with Alfred, because when I was calling up Alfred with its hotkey it would act erratically. I made a screencast of it yesterday to illustrate (
link). But once someone on IRC recommended I quit QS, Alfred's bezel then remained onscreen and clicking and focusing on other windowed apps were no longer a problem (the guy thought Alfred's bezel was QS).
Currently everything's working fine. Once my Mac starts acting schizo again, I'll do another screencast.
As for Event Triggers, here's a
screenshot of what I got under custom triggers. I don't know if I have created any event triggers or how to search for them.