Incorrect shadows without any reason.

How to reproduce:

1-Make a hole with at least 5 blocks depth

2-Make a space to place tnts

3-Place tnts

4-Place water arround the tnts

5-Place a any pressure plate in the middle

6-Place some blocks arround the hole

7-Summon a Zombie next to the hole

8-Let the Zombie knock you to the hole

9-You and the Zombie will die

10-Summon other Zombie next to the hole

11-Let the Zombie knock you to the hole (Make sure you has placed some tnts arround the pressure plate)

12-You and the Zombie will die again

13-Break blocks arround the hole and you might see the Incorrect shadow

Here is a screenshot of the hole: https://bugs.mojang.com/secure/attachment/338246/2020-09-23_12.05.03.png