I can confirm that the new soundfile causes a crash.
However, it only plays for 'armors' that use bare feet to walk underwater.
Annihilator, Thief/Sea, Spacesuit and some others doesn't use the new soundfile. Treasure hunting underneath the surface is still possible to a certain degree.
Using the chiller suit sadly causes a crash too.
Another thing I encountered:
Feature or not, I used a battle-laser and a neural whip in certain situations where the enemy is pointblank to the adjusted tile.
In the HUD appears "Close Quarter Check Failed" or something and my hand misses the shot or spins left/right and shots the ground.
Is this a new feature not mentioned in the patch-notes?
I can work with that tho but it's quite confusing to go for an 1-tile autoshot and losing TU's for failing a former 100% hit.