I updated to A20.1 B6 and saw the same behavior from A20 launch on MacOS. Ok, so easy workaround: go to ~\Library\Application Support\Steam\steamapps\common\7 Days To Die, right click on the 7DaysToDie app and select Get Info, click Open using Rosetta, close Get Info, launch the game.
Same result.
Huh?
Go back to Get Info, and Open using Rosetta isn't checked. No matter what I do, checking Open using Rosetta never sticks.
Roll back to original A20 and I can set Open using Rosetta and it sticks.
Thoughts?