Hmm, changing reaction fire option shouldn't take any TU...
-geever
Changing reaction fire do not take any TU. However, u can't change it if u r out of TU for it. Lets say that u had 23 TU. Reaction fire is set to reserve 14 TU for one shot. Reloading takes 12 TU. U reload and end up with 11 TU. U can't then change reaction fire to no reservation to use that remaining 11 TU.
But main bug is: If TU r reserved, u shouldn't be allowed to reload at all. At least untill u set reaction fire to no reservation so u have enough (not reserved) TU for it.