"Broken" object is invisible in any kind of bitmap conversion

[instinctive.de]

Hi again,

well, I hope this time I'm not too stupid

I have this object in the attached XAR file, which is a group comprised of two other groups - the titles etc. and a copy of them that acts as a shadow.

Whatever I try to do with this object - if it requires a bitmap, it will fail.

"Create bitmap copy" -> Empty bitmap
Live effects -> Object just disappears completely

etc...

Is there some way to circumvent this bug, or is it not even one?