Sublime Text uses the system find buffer. This means that if I search something in Sublime (with cmd+F or Edit > Find), it automatically appears in the search box in apps like Safari (also using cmd+F or Edit > Find).
There is some discussion about this for the Zed and Atom text editors:
zed#17467 Integrate with macOS system find buffer
atom#4650 Atom doesn’t respect/update OSX’s find pasteboard / clipboard
Unlike zed and atom, Sublime does integrate this way. But I don’t want it to! What I’m looking for navigating pages in Safari has almost nothing to do with what I’m searching for in code, especially if I’m regularly performing find tasks in both apps at once!
Of course I could holler at Apple to just let me have its internal search pasteboard not automatically synchronized across applications. But good luck getting anywhere with that.