At least I appreciate people exploring and sharing the limits and capabilities of 12.x as long as it's safe and not impacting others. Interesting behavior here that it eventually turned left from the straight lane but better if it had just gotten into the left turn lane to begin with. 12.2.1 also seems to understand that people U-turn when encountering road closed:If navigation is heading into a construction zone, disengage and drive manually until you're past the construction zone, then re-engage.
Although here it also approached too quickly and didn't swing to the right enough to complete the U-turn and could not do a 3-point turn without the ability to reverse.