Why can't throw 2 grenades on same turn

With empty hands, i.e no +8 TUs penalty, you should be able to throw 2 grenades on the same turn, if you don't move at all. All grenades have a TU cost of 50% in weapon_gc.xml and yet when you try throwing the 2nd one, it costs exactly 50% of your TUs + 1 TU.

Is it on purpose?

Is it a rounding error?

Is it the reason why some weapons use 49% of TUs and not 50%?

Should it not be corrected to 49% in this case for the next vanilla hotfix?

Thanks

I doubt it will be corrected, as Chris has repeatedly said he's not doing any more balance changes. Your best bet would be to present it as a bug, although that would probably be a super low priority bug.

Did you throw in straight line or have your soldier had to rotate. The same issue might be with sniper. The normal shots costs 49% but if you spend 1 TU for turning you won't be able to take 2 normal shots.

Not a single TU has been spent for anything but trying double throw, straight in front of the soldier.

I know Chris won't do balancing, but that's a rounding bug. I fixed the data myself in my game, but many players will not dare doing that. It's minor sure, but it's only minor request and a 3 mn fix to alter the file for the next hotfix. I understand Chris won't do any more enhancement, but yes, that's probably a rounding bug, perhaps affecting only soldiers with an odd (as opposed to even) number of TUs.

You have 57 TUs, you must spend 28.5 to throw your grenade, the first one costs 29 and the second can't be thrown...

Can soldiers with an even number of TU throw two grenades when a soldier with odd TU only throw one then?

If that is not the case and the devs were aware of how the rounding works when they set the TU costs to only allow one grenade throw per turn then that is the balance they were aiming for so can't really be classed as a bug.

How does one fix the issue? What files to dig in?

go to weapons_gc.xml and modify values for grenades.