Any further pointers ?
Yes, find out why the := query doesn't work, because it should. Try it outside of the debugpanel just to make sure that interface itself isn't getting in the way.
Actually I tried it from the debugpanel only and it did not return any result (total count was 0). Do you get results at your end by using = in the query
Yes, it works just fine on my end, always has. That's exactly why I said it should work so figure out why yours doesn't, perhaps by trying it outside of the debugpanel.
