i have tried to see if this problem has appeared before couldn't find anything
friend of mine set up a private server for close friends to play on and recently a strange bug has cropped up that causes pokemon to stop spawning. when someone travels through a nether portal pokemon can be seen after first loading into the dimension when using the portal but once you move away no more spawns are seen. server returns [world spawner/info] [striderr]: [com.pixelmonmod.pixelmon.api followed by a couple of different instances of .spawning.spawnercoordinator$processor:run:"#value that varies"]: then either a timerthread loop or timerthread unknown source whenever somebody goes to the nether.
if the person experiencing this bug logs out then back in its fixed until using the portal again. this bug can also spread to others currently logged on as well regardless of which dimension they are on. currently, this only happens with the nether, the end and ultra space do not cause this to happen.
other mods used are
Better Builder's Wands Portablejim BetterBuildersWands-1.12.2-0.13.2.271+5997513.jar
Biomes O' Plenty Forstride BiomesOPlenty-1.12.2-7.0.1.2443-universal.jar
Chisel tterrag1098 Chisel-MC1.12.2-1.0.1.44.jar
ConnectedTexturesMod tterrag1098 CTM-MC1.12.2-1.0.1.30.jar
Dynamic Lights atomicstrykergrumpy DynamicLights-1.12.2.jar
Hwyla TehNut Hwyla-1.8.26-B41_1.12.2.jar
Inventory Tweaks Kobata InventoryTweaks-1.64+dev.146.jar
Iron Backpacks gr8pefish IronBackpacks-1.12.2-3.0.8-12.jar
Iron Chests ProgWML6 ironchest-1.12.2-7.0.72.847.jar
JourneyMap techbrew journeymap-1.12.2-5.5.5.jar
Just Enough Items (JEI) mezz jei_1.12.2-4.15.0.292.jar
LagGoggles Terminator_NL LagGoggles-FAT-1.12.2-4.9.jar
Ore Excavation Funwayguy OreExcavation-1.4.143.jar
OreLib

same problem.

Forge Version:
Forge 14.23.5.2847

Mods:
animania-1.12.2-1.7.2.jar
CraftStudio-1.0.0.93-mc1.12-alpha.jar
BaubleOfUndying-1.12-1.0.1.jar
Baubles-1.12-1.5.2.jar
BringMeTheRings-0.4.jar
MendingGems-1.12.2-1.0.0.jar
CarryOn+MC1.12.2+v1.12.3.jar
obfuscate-0.2.6-1.12.2.jar
coroutil-1.12.1-1.2.35.jar
zombieawareness-1.12.1-1.11.16.jar
DynamicSurroundings-1.12.2-3.6.0.2.jar
OreLib-1.12.2-3.6.0.1.jar
Bountiful-2.2.1.jar
Forgelin-1.8.4.jar
future-mc-0.2.0.jar
CustomLANPorts-1.12.2-1b.jar
HammerCore-1.12.2-2.0.4.2.jar
Patchouli-1.0-20.jar
touhoulittlemaid-1.12.2-1.1.9-release.jar
journeymap-1.12.2-5.5.5.jar
Xaeros_Minimap_1.18.4_Forge_1.12.jar
IVChain-1.2.0.jar
PixelExtras-1.12.2-2.5.4-universal.jar
Pixelmon-1.12.2-7.1.1-universal.jar
pixelmonclothesmod-1.2.2.jar
PixelmonInformation-1.12.2-7.1.0-0.3.2.jar
CreativeCore_v1.9.54_mc1.12.2.jar
IGCM_v1.2.10_mc1.12.2.jar
PlayerRevive_v1.2.26_mc1.12.2.jar
Stellar+API-1.12.2-0.4.2.9.jar
aether_legacy-1.12.2-v1.4.4.jar
AppleSkin-mc1.12-1.0.9.jar
astikorcarts-1.12.2-0.1.2.7.jar
autothirdperson-1.2.1.jar
BedFix-1.0-MC1.12.jar
bettermobgriefinggamerule-1.12.2-7.0.1.jar
BiblioCraft[v2.4.5][MC1.12.2].jar
BiomesOPlenty-1.12.2-7.0.1.2444-universal.jar
CakeMod_1.5.jar
CashCraft-1.12.2-4.0.0.1.jar
ChinjufuMod[1.12.2]3.2.2.jar
CleanView-1.12.2-v1c.jar
clearwater-1.2.jar
CoffeeSpawner-1.12-1.0.2.jar
CosmeticArmorReworked-1.12.2-v4a.jar
CustomNPCs_1.12.2(30Jan19).jar
dirt2path-1.8.0.jar
dismounte_1.12-1.0.jar
DoggyTalents-1.12.2-1.15.1.4-universal.jar
doubledoors_1.12-1.2.jar
ElectroblobsWizardry-4.2.6-MC1.12.2-tw.jar
Fakename+MC1.12.2+v1.2.jar
ForgivingVoid_1.12.2-1.0.23.jar
FreeLook-1.0.jar
furniture-6.3.1-1.12.2.jar
Harvest-Festival-Legacy-1.12.2-0.6.15.jar
Hwyla-1.8.26-B41_1.12.2.jar
jei_1.12.2-4.15.0.268.jar
keywizard-1.12.2-1.7.3.jar
MutantBeasts-1.12.2-0.6.0.jar
NaturesCompass-1.12.2-1.6.0.jar
NoMoreRecipeConflict-0.13(1.12.2).jar
noRecipeBook_v1.2.2formc1.12.2.jar
Pam's+HarvestCraft+1.12.2zd+Surprise+for+Yogcast.jar
phosphor-1.12.2-0.2.6+build50-universal.jar
portablecraft-1.1.jar
Skye's+Bakery+2.0.2+for+MC1.12.2.jar
SmoothFont-mc1.12.2-2.1.1.jar
structurize-1.12.2-0.10.198-ALPHA.jar
switchbow-1.5.6.jar
Sword_Shield-_1.0.0.jar
TheBetweenlands-3.5.6-universal.jar
ToolBelt-1.12.2-1.9.10.jar
trade-1.0.4.jar
TravellersBackpack-1.12.2-1.0.21.21.jar
ViesCraft-1.12.2-5.9.13.jar
villager-market-1.12.2-1.0.1.jar
Waystones_1.12.2-4.1.0.jar

Marking this ticket as Expired because of age and being unable to reproduce the ticket in
Pixelmon 7.3.1, if this is still occurring in 7.3.1 please make a new ticket