Hi,
01. First flight (LSZH to EHAM) started with 6600 kgs and arrived at gate with around 2100 kgs and fully deborded.
02. Set INIT B PAGE fuel to 6.1 for the second flight.
03. Called the refueling truck.
04. It came, started the refueling automatically and the fuel flow only stopped at 6600 kgs, not at 6100 kgs as set.
05. For GSX, the refuel seems to continue as the green messages continued to show "Refueling <amount> gals.
06. Checked the FSLabs A320 refueling web page and it was indeed stopped.
07. Could find no way to make GSX end the refueling and proceed to next actions (catering and boarding).
08. Pushback did not work also as GSX was stucked in the refueling.
09. Executed pusback with IVAO and flew back to LSZH.
10. Arrived at the gate and fully deborded: FOB = 3740 kgs, OPTIONS/FUEL = 3753 kgs, INIT B/BLOCK = 3.9
11. INIT B/BLOCK to 8.5. Did NOT touch OPTIONS/FUEL value.
12 After debording completed, called for truck.
13. Fuel flow started automatically and progress monitored on FOB and OPTIONS/FUEL was correct.
14. Again it stopped at 6600 kgs but this time the truck animation completed and the truck did go away (this time I only requested catering after the truck went away, don't know if it makes a difference).
15. It seems to me that GSX only reads the fuel value the first time after simulator starts and does not "reset" and read the current value at the moment the fuel truck is actually called.
Hope it helps.