Indeed, as you said, from the example you provided, this polygon can maintain the correct color and visibility in 2D.
However, when I raised this question, I did not explain one point. Visibility problems do not occur absolutely. On the premise of correct 2D and color, not all polygons will have visibility errors (possibly due to the position of the polygon or the shape of the polygon, which is just my guess).
In my application scenario, I added some face data of administrative areas, but only one polygon will have visibility problems. So in my last reply, the screenshot showed that some polygons were not displayed correctly.
In the following example, I just modified the position and shape of the polygon you provided, and added a button to ensure that you can successfully locate it after switching to 2D mode. You will find that it does ensure the correctness of color, but the visibility is incorrect. It will appear randomly with the zoom of the camera.