Trigger Volumes crosstalk (project file attached)


sorry for bothering you again with a file-to-look-at, but I am really not getting it done after hours of trying.

I have to shape narrow capsules, each with its trigger sphere. One is supposed to only react to the Cube, the other one only to the Cylinder.
I set it up accordingly, each capsule printing a message when triggered.

But even when I drop say the cube on the wrong one, the other one gets triggered. Like the trigger volumes are crosstalking or are not separate trigger volumes!

How can I get each capsule to only react to their drop objects (Cube, Cylinder)?

Thanks in advance!

File (6MB):