You can tell the Danish community whatever you want. I've put in over 40 hours on this issue, one way or another, and I still can't find a fix that doesn't break other usage cases. I'm sure you don't believe me, but that's the simple truth. I haven't been sitting on my ass ignoring it, I have four test lists/forms decidated to this issue, which I work on as and when I have time. I have dreams about this issue. I wake up in the middle of the night with possible solutions, and try them out at 4am.
As I said earlier, some problems are just intractable, and I'm not good enough to fix them. I've run in to a fundamental problem with the way we original designed the summing / totalling / grouping when it comes to join elements, which would require rewriting a lot of code. But we simply can't afford to do that, as any large amounts of coding we do from here on out need to be on 4.0, which is a ground up rewrite of Fabrik, rather than spending weeks of coding trying to fix one corner case in 3.1.
I'll be happy to refund your sub out of my own pocket. Mail me, hugh dot messenger at gmail dot com, give me your PayPal address.
-- hugh