At about 19:30 on December 13, 2020, I updated minecraft from 1.16.100 to 1.16.200 in the Microsoft Store. When I opened the game, I found the situation in the attachment: sometimes the GUI can display correctly, sometimes it can't; when entering the map, the square material is almost completely damaged, and it is not caused by installing or uninstalling other texture packages. I tried to restart the computer and re install the game, but it didn't help.