Describe the bug

1. What did you expect to happen?

Reducing I:latitudeTemperatureModifier value in config file make all biomes, from snowy to tropic, to fit every type of biome into 6000x6000 map, with snow biomes near north world border and tropic/desert biomes near south world border. Making map significantly larger or even unlimited is not an option.

2. What actually happened instead

While looking at F3 debug info, it shows that biome is colder when moving north and warmer moving south from equator, but very little difference in biome generations happens. It is impossible to find snow or ice biome at north or tropic/savanna/desert at south, at least while keeping in 3k blocks from equator distance. There also are lions at north (where F3 shows really low temperatures, with max near 0 C and min below -30 C) and polar bears at south.

P.S. Everything is even worse - I tried setting I:latitudeTemperatureModifier to 1000, which is minimal allowed, and still no negative temperatures, ice or snow at sea level even at 5k blocks north from equator.
P.P.S End again, even worse, I tried to edit code to allow I:latitudeTemperatureModifier be less than 1000, successfully compiled mod, and with I:latitudeTemperatureModifier=300 still no extremely cold or extremely hot biomes within 3k blocks from equator (but minor climate changes happens).

3. If it was a crash, upload the full log file (latest.log)

No, there was no crash

4. If they would help to explain the issue, include screenshots

Nothing special, everything looks normal but doesn't match temperature

To Reproduce

1. Set I:latitudeTemperatureModifier between 6000 and 2850 and S:temperatureMode to whatever you prefer in TerraFirmaCraft - General.cfg
2. Create world with TFC Classic world type and any seed
3. Try to find very cold (snowy or ice) biome at north and very warm or even hot (tropics, desert or savanna) at south. You will not find it.
4. Look for tropic animals at cold latitudes and polar animals at warm latitudes. You will find some.

Meta Info

• TFC Version:

TerraFirmaCraft-MC1.12.2-1.5.5.155

• Were any other mods included?

Yes, there is relatively many mods, including Sponge, but creating world with Vanilla+Forge+TFC only does the same.
Here is complete list of mods:
AdvancedRocketry-1.12.2-1.7.0-229-universal.jar
appliedenergistics2-rv6-stable-7.jar
BetterQuesting-3.5.329.jar
forestry_1.12.2-5.8.2.387.jar
gendustry-1.6.5.8-mc1.12.2.jar
ImmersiveEngineering-0.12-89.jar
LibVulpes-1.12.2-0.4.2-75-universal.jar
MagicBees-1.12.2-3.1.10.jar
NuclearCraft-2.18q-1.12.2.jar
OpenComputers-MC1.12.2-1.7.5.192.jar
questbook-3.1.1-1.12.jar
SGCraft-2.0.4-bugfix-1.jar
StandardExpansion-3.4.173.jar
TerraFirmaCraft-MC1.12.2-1.5.5.155.jar
TFC-Metallum-MC1.12.2-1.3.0.jar
Whopper-Mod-1.12.2.jar
xnet-1.12-1.8.2.jar
bdlib-1.14.3.12-mc1.12.2.jar
BetterFps-1.4.8.jar
CodeChickenLib-1.12.2-3.2.3.357-universal.jar
CraftTweaker2-1.12-4.1.19.jar
foamfix.jar
FpsReducer-mc1.12.2-1.12.4.jar
gendustryjei-1.0.2.jar
Hwyla-1.8.26-B41_1.12.2.jar
jei_1.12.2-4.15.0.283.jar
journeymap-1.12.2-5.5.5b7.jar
LagGoggles-FORGE-1.12.2-3.2.jar
mcjtylib-1.12-3.5.4.jar
OptiFine_1.12.2_HD_U_E3.jar
randompatches-1.12.2-1.21.0.3.jar
spongeforge-1.12.2-2838-7.1.9-RC3981.jar
UniDict-1.12.2-2.9.3.jar
WailaHarvestability-mc1.12-1.1.12.jar
WanionLib-1.12.2-2.4.jar
worldedit-forge-mc1.12.2-6.1.10-dist.jar

Not really a bug, just combination of wrong settings, wrong time and poor compatibility with some mods.