Yes I did a CGK turnround (in F). It's been a while so I can't be sure what happened with the tax, but I recall that CX met me and helped the process along, and everything went smoothly. But then the plane went tech after we had reboarded and I had an unscheduled night at the Sheraton Bandara courtesy of CX, but with no overnight stuff since I was expecting to be home that night (lesson learned there).

Edit to say that on reflection I recall that a CX lady met me off the flight, escorted me through a sort of security point to the departure lounge, took some money off me (probably US$10) and returned with a receipt. The transit went very smoothly indeed. It was just the going tech that was a pain - fortunately I was doing the run on a Saturday not a Sunday, otherwise I'd have had a tricky job explaining to the boss why exactly I was flying back from Jakarta when I should have been in the office.