Question on Turn Signals

So I just took my car out for a test drive. 1988 244 DL. Installed a newly refurbished turn signal stalk and wanted to see if they are supposed to turn off automatically after completing a turn and returning the wheel to zero. It didn’t work. I’m not upset since I’m already used to turning it off manually but when I had my car checked out by a classic Volvo specialist a couple months ago for health inspection, he mentioned that it wasn’t working correctly. Do you think he was mistaken that my model should turn the signal off automatically? Or did I just have bad luck and have two turn signal stalks that don’t work 100%? The springs are intact on both of them. They function super smooth otherwise and the high beams also come on easily.