I'm back, but slammed dealing with paid subscriber issues at the moment. I understand your frustration, but when you talk about "customer issues" ... bottom line, unless you have "Standard" or "Pro" next to your name in the forums, and the post in in Standard or Pro ... I'm very limited in the time I can put in to working on your issues. I appreciate that isn't specifically "your" issue, but we aren't getting hammered about it left right and center, so it remains where it is on the totem pole - something we need to fix, but currently in the "in our copious spare time" category.
Like you, I've gotten as far as "it's in Mootools core somewhere", but then I run in to extremely frustrating issues with IE's developer tools, that just won't break where I need, or I get in to an infinite break loop, where the act of the focus switching to the debugger triggers another break. if I could spend a solid day or so on it, I could probably get somewhere, and override whatever it is we need to deal with in our Moo extensions lib. But I just can't afford to take a couple of days out on a Community issue right now.
Sorry to be so blunt, and I don't usually get as crass and commercially minded about these things, but my medical bills are significant, and I'm having to take that in to account when scheduling my time.
This is one of the many reasons we're rewriting Fabrik from the ground up for v4, with an entirely different, platform agnostic approach.
-- hugh