Transparency on a placeable: Weird things happen

Neverwinter Nights 1
1

I created a jar with transparent glass and some transparent green liquid.

On NWN 1.69/Diamond I got this:
Alchjar169
The green liquid can be seen through the glass.

The EE thinks a bit different:
AlchJarEE
The green liquid can only be seen from top, but not through the glass.

Whats happening here???

The model:
Jar.zip (79.4 KB)

2

Partially solved: The jar needs to set to “static”, then it will work properly.

So the question is: Why doesn’t it work on non static objects?

3

Seemingly I have to live with it.