Hidden Control + Option + F shortcut?

[evangoldin]

Hey folks, I installed Rectangle recently and I'm generally loving it. However, weird thing: Another app I use has a shortcut for Control + Option + F, which I use all the time. Every time I do, Rectangle seems to be triggered and resizes whatever window is active and makes centered and small. But when I look at the list of Rectangle shortcuts, I don't see that one anywhere.

But this started when I installed it, so seems to be from Rectangle. Is there something I'm missing? Any way to turn this off?

[rxhanson]

Sorta unintuitive, but if you click on the ellipsis in the bottom left corner you’ll see more shortcuts and you’ll find that one there (center third).

[evangoldin]

D'oh! I totally did not get realize that was an expand/collapse carrot. Thank you! Problem solved.