I have a 1941 12ga field LC and the safety does not automatically reset to safety upon opening while the 1947 field 20ga does. I don’t believe either has the three position safety. A smith had the 12 apart to glass bed the Butt stock as i was nervous about it developing a crack, looked like a finish only crack but wanted to be safe.

So the questions:
Does anyone know if all the LCs had auto safety?
If they do any ideas on what might not be working or put back together right?

Appreciate any insight