渲染错误 Rendering error

出现部分区域的方块和实体在阴影下的黑暗，但上方没有方块阻挡光线

Some blocks and entities look dark, but there are no blocks above to prevent light

注：我用1.16 Pre-release 5生成了这个世界然后保存了，然后用1.15.2加载，保存，再用1.16 Pre-release 5加载

note: I create this world in 1.16 Pre-release 5,and save. Open it in 1.15.2 and save,and reopen in 1.16 Pre-release 5