Not sure if related. But 3 weeks ago on an AA domestic flight, the F seat maps cleared and not just on EF, but on AA. The gate agent cleared 11 people on the upgrade list (E175) and all boarded. But then they realized that they started getting duplicate seats when scanning boarding passes.
The flight was delayed and all of us who were upgraded had to deplane and get new seats - and not the original seat you had. And when the agent cleared some back to F - they did not do it per the upgrade list.
I suspect this is an AA issue and not an EF issue.