Fluids sometimes do not flow into monster rooms even when not intersecting chunk borders

I have found an instance of a monster room with water that does not flow into it. This is distinct from MC-275985 because this does not occur at a chunk border.

Steps to reproduce:

1. Generate a standard world with the seed “-3773186222311090254”.

2. Execute

   /execute in minecraft:overworld run tp @s -505.61 21.84 -2389.05 147.54 9.75

3. ❌ A water source that generated in the wall of the monster room does not flow into the room. It is not located at a chunk border.

The monster room also contains two chests directly behind each other, so this bug might be the result of two dungeons and a cave intersecting.