Re: Battlefield V missing from EA App, but bugged with Origin.
Ok, follow-up to this with a solution I found in THIS THREAD with credit to user wiseolddude :
"(in the Origin app)
Application settings>overlay>disabled (doesn't work and the game still has the overlay)
Game>properties>disable overlay>this works."
So right clicking BF V in Origin, selecting Game Properties, and disabling Origin In-Game from there, successfully disables the overlay. This also successfully resolves the movement bug without sacrificing my ability to join a squad with friends.