@BluebellfloraHey there. Sorry for taking so long to get back to you. I was doing some troubleshooting to eliminate some possible causes. Here's what I found out.
Uninstalling, Reinstalling, Removing the EA folder, and doing a fresh boot of the game had no effect on the M1 iMac. The issue remained.
I tried booting the M1 iMac in Safe Mode to eliminate any possible interfering login items or processes. The issue remained.
I also tried booting the Intel MacBook in Safe Mode, however, the game refused to boot at all on that machine, in Safe Mode. It claimed it needed the Legacy Edition of the game to do so. Once I rebooted into Normal Mode, the game booted like normal and the issue remained.
I dug through my old stuff and tried installing Origin and the base game on an Early 2011 MacBook Pro 15" running macOS High Sierra 10.13.6. However, this device doesn't support Metal, so the game wouldn't boot. So, I won't be able to tell if the issue exists on this hardware or not.