1.12.2 Minecraft tree farm isn't growing! FIXED!

[Phoenix Flaming Star]

I've had an issue in Minecraft for a long time. My usual tree farm pattern wasn't working. I finally want to know why! This thread is my problem solving attempt.

First, we need to find out what patterns of oak saplings makes them grow and what patterns don't.

[Phoenix Flaming Star]

Does Not Work

<-- My usual tree farm pattern doesn't currently work.

[Phoenix Flaming Star]

Works

Checkerboard pattern


This pattern

[Phoenix Flaming Star]

So I'm starting to see something. For some reason, in my game, oak saplings don't grow when placed next to each other. I play 1.12.2 and the very first pattern used to work. I think one of the many mods I have installed change this behavior.

This will be my next test. I'm going to remove my mods folder and test the very first pattern again.

[Phoenix Flaming Star]

Works!!


A mod has changed the way my trees grow! Now to test my mods in small groups. This is to find out when I get the problem again.

[Phoenix Flaming Star]

(Good means the issue (saplings not growing next to each other) doesn't happen) I tested in small groups of up to 5 mods at a time.

Terraqueous - Good
Biomes O Plenty - Good
Fast Leaf Decay - Good
Open Blocks - Good
Actually Additions - Good
Simple Harvest - Good
Electroblobs Wizardtry - Good
Ancient Spellcraft - Good
Artifacts - Good
Baubles - Good
Better Caves - Good
Better Questing - Good
Bibliocraft - Good
Blockcraftery - Good
Blocks Plus - Good
Chisel - Good
Custom NPC's - Good
Doomlike Dungeons - Good
Mo Creatures - Good
Dungeon Tactics - Good
Dynamic Surroundings - Good
Everlasting Abilities - Good
Extra Golems - Good
Extra Spells - Good
Extrautils2 - Good
Fish's Undead Rising - Good
Flat Colored Blocks - Good
Voxel Map - Good
Future Versions - Good
Ghost Spells - Good
Heroic Armory - Good
Hunger In Peace - Good
Hwyla - Good
Improved Backpacks - Good
Inventory Tweaks - Good
Iron Backpacks - Good
Iron Furnaces - Good
JEI - Good
Legendary Plus - Good
Lootbags - Good
Minecolonies - Good
Mo Spells - Good
Mowzies Mobs - Good
Optifine - Good
Oreberries - Good
NPC Integration - Good
Nature's Compass - Good

Recurrent Complex - CAUTION! Oak saplings do NOT grow next to each other!

[Phoenix Flaming Star]

Not the mod I was expecting.

When I installed Recurrent Complex, my saplings stopped growing! I'll remove that mod and install the rest of my mods.

Problem SOLVED! The issue has NOT returned! Recurrent Complex will no longer be a part of my modlist unless I hear word that this issue is fixed.