Opt+arrow cursor manipulation stopped working Part of my regular repertoire of keyboard shortcuts is Opt+arrow and Shift+Opt+arrow for moving (and selecting) a word at a time in apps like Word, TextEdit, etc.

A couple days ago Opt+arrow stopped working in most places (though not all). I figured a reboot would clear it out but it did not. The only place I can find that it works right now, strangely enough, is a textbox on a website in Chrome. So I can use it this dialog I'm typing in right now, but not the URL field of the browser.

Any idea how to fix and/or reset this behavior? I'm lost without it.
I found the answer. 

Even though it wasn't selected, I did have installed "Unicode Hex Input" as an Input Soure (along side U.S) in the Keyboard->Input Sources preference pane. I removed the Unicode option altogether, and the opt-arrow shortcut started working again instantly.