[Not a bug - 3.82] 10g of fat for tanning regarded as 5g

[Dynggyldai]

I cannot tan the skin that requires 10g of fat with 10g of fat. It asks for 5g more.
The trigger of this bug could be that this is a black grouse skin saved in a previous version and I'm trying to tan it with fresh hazel grouse fat. When I was tanning another hazel grouse with its own fat there were no issues. I made screenshots but when I downscale them to the 256KB limit they become unreadable.

[JP_Finn]

That’s a settings for accuracy. Not a bug.
Rough estimate how much fat one lump weighs.

And yes, smaller birds fat is not enough to tan larger birds that with rounding/estimate needs little bit more. Little bit of tree bark tans a lot of bird skins.