Cracks from underwater view - when upper room has different floor heights

[goldlife2904]

When lara is underwater and look above to a portal there are many very big cracks in Line of Sight ... when Lara is on Land there is no crack seen.

Important:
Only when a room what is stacked on top has at least a single square which is lowered (below the floor height), the cracks appears.

TombEngine.2025-01-03.18-11-16-753.mp4

blue is water level
and there was lara
red is the upper room
and between upper room and room above is that crack problem

Reproducing Project with project files:
https://leif.trlevel.de/levels/BUG_CRACKS.zip

Important:

As TE allows it that a room can have a square which is lower than the portal this bug should be fixed.
Otherwise TE should not allowed this (like in NGLE / Winroomedit)

It would be nice, if the cracks can be removed also when Lara is underwater and looks up - and the upper room has a square which has a floor below the portal