And just to be clear, it's not the sort of thing which is likely to just "get fixed". At this point in Fabrik's life, the remaining issue like this are the intractable ones, where it's just not economically feasible to expend the effort - making AJAX work in repeat groups isn't going to bring in a flood of new support subscriptions to pay for the work. So these kinds of issues are the ones I occasionally chip away at when a get a wild hair (so may get fixed at some point, but not roadmap or ETA), or I work on when someone (or someones) who want the feature badly enough fund the work.
-- hugh