Why do I see words when I press shift+esc on Chrome address bar? This list of words also appears when I put a textbox on a PDF when opened in Preview and press Esc. I suspect this has nothing to do with Chrome.
That is normal, I think this was added when yosemite was released. Its basically predictive text for the mac. That shows up every time you press the esc key in a textfield. Hope this helps :)