Video example here

Description

In a network comprising only a creative energy cell, an import bus on a chest containing one redstone, and a formation plane, the redstone will be duplicated endlessly because it is not removed from the chest when created by the formation plane.

Environment

Replicated in both single player creative and multiplayer.
Modpack is FTB Revelation 2.0.0

All mods:
ChickenASM-1.12-1.0.2.7
ImmersiveEngineering-core-0.12-82
ActuallyAdditions-1.12.2-r135.jar
ActuallyBaubles-1.12-1.1.jar
AkashicTome-1.2-10.jar
AppleSkin-mc1.12-1.0.9.jar
appliedenergistics2-rv5-stable-11.jar
architecturecraft-1.12-2.68.jar
Aroma1997Core-1.12.2-1.3.0.2.jar
Aroma1997s-Dimensional-World-1.12-1.3.0.0.b37.jar
astralsorcery-1.12.2-1.8.10.jar
AutoRegLib-1.3-17.jar
badwithernocookiereloaded-1.12.2-2.12.jar
base-1.12.2-3.7.2.jar
Baubles-1.12-1.5.2.jar
bdlib-1.14.3.12-mc1.12.2.jar
bedpatch-2.2-1.12.2.jar
BetterAdvancements-1.12.2-0.0.5.17.jar
BetterBuildersWands-1.12-0.11.1.245+69d0d70.jar
BiblioCraft[v2.4.4][MC1.12.2].jar
binnie-mods-1.12.2-2.5.0.165.jar
blockcraftery-0.1.3.jar
BloodMagic-1.12.2-2.2.12-97.jar
Bookshelf-1.12.2-2.3.544.jar
Botania r1.10-354.jar
BrandonsCore-1.12-2.4.2.157-universal.jar
careerbees-0.4.0.jar
Chameleon-1.12-4.1.3.jar
ChestTransporter-1.12.2-2.8.8.jar
Chisel-MC1.12.2-0.2.0.31.jar
chiselsandbits-14.17.jar
Clumps-3.0.0.jar
CodeChickenLib-1.12.2-3.1.8.341-universal.jar
CoFHCore-1.12.2-4.5.2.19-universal.jar
CoFHWorld-1.12.2-1.2.0.5-universal.jar
compacter-1.3.0.3-mc1.12.2.jar
compactmachines3-1.12.2-3.0.12-b215.jar
CompactSolars-1.12.2-5.0.17.340-universal.jar
conarm-1.12.2-0.0.20-b.jar
Controlling-3.0.6.jar
CookingForBlockheads_1.12.2-6.3.26.jar
CraftTweaker2-1.12-4.1.8.jar
CTM-MC1.12-0.3.0.15.jar
CustomMainMenu-MC1.12.2-2.0.8.jar
DankNull-1.12-1.4.33.jar
DarkUtils-1.12.2-1.8.207.jar
deepresonance-1.12-1.7.0.jar
DefaultOptions_1.12.2-9.2.7.jar
diethopper-1.1.jar
dirt2path-1.7.1.jar
Draconic-Evolution-1.12-2.3.11.290-universal.jar
ElecCore-1.12.2-1.8.434.jar
elulib-0.1.12.jar
embers-0.230.jar
EnderCore-1.12.2-0.5.30.jar
EnderIO-1.12.2-5.0.26.jar
EnderStorage-1.12.2-2.4.3.130-universal.jar
engineersdoors-0.7.2.jar
EngineersWorkshopReborn-1.12.2-1.0.8.37.jar
environmentaltech-1.12.2-2.0.11a.jar
etlunar-1.12.2-2.0.11a.jar
Exchangers-1.12.2-2.7.2.jar
ExtraCells-1.12.2-2.5.13a58.jar
ExtraRails-1.12-1.3.0.jar
extrautils2-1.12-1.7.6.jar
ExtremeReactors-1.12.2-0.4.5.49.jar
FastWorkbench-1.12.2-1.5.0.jar
fencejumper-1.12-1.0.3.jar
flatcoloredblocks-mc1.12-6.6.jar
fluxnetworks-1.12.2-3.0.11.jar
foamfix-0.9.9.1-1.12.2-anarchy.jar
forestry_1.12.2-5.8.0.295.jar
Forgelin-1.6.0.jar
ForgeMultipart-1.12.2-2.4.2.58-universal.jar
FTBGuides-1.0.2.9.jar
FTBLib-5.1.0.21.jar
FTBUtilities-5.1.0.26.jar
gadgetrycore-0.2.0.jar
gadgetrymachines-0.2.1.jar
gendustry-1.6.5.8-mc1.12.2.jar
Guide-API-1.12-2.1.5-60.jar
Harvest-1.12-1.2.6-18.jar
ImmersiveEngineering-0.12-82.jar
immersivepetroleum-1.12.2-1.1.9.jar
industrialcraft-2-2.8.73-ex112.jar
industrialforegoing-1.12.2-1.10.0-173.jar
IndustrialWires-1.6-25.jar
InventoryTweaks-1.63.jar
IronBackpacks-1.12.2-3.0.8-12.jar
ironchest-1.12.2-7.0.40.824.jar
JEHC-1.12.2-1.5.1.0.jar
jeibees-0.9.0.5-mc1.12.2.jar
jeiintegration_1.12.2-1.5.1.36.jar
jei_1.12.2-4.9.2.196.jar
journeymap-1.12.2-5.5.2.jar
JustEnoughResources-1.12.2-0.8.5.27.jar
KleeSlabs_1.12.2-5.4.10.jar
longfallboots-1.2.1a.jar
lostcities-1.12-2.0.9.jar
MagicBees-1.12.2-3.1.10.jar
Mantle-1.12-1.3.2.24.jar
mcjtylib-1.12-3.0.0.jar
MCMultiPart-2.5.1.jar
memory_repo
minetogether-1.10.2-1.8.7.jar
modnametooltip_1.12.2-1.10.0.jar
mods.txt
modtweaker-4.0.12.jar
moreoverlays-1.13-mc1.12.1.jar
Morph-o-Tool-1.2-16.jar
Morpheus-1.12-3.3.2.jar
MouseTweaks-2.8-mc1.12.1.jar
MrTJPCore-1.12.2-2.1.2.34-universal.jar
MTLib-3.0.5.jar
natura-1.12.2-4.3.2.49.jar
NaturesCompass-1.12.2-1.5.1.jar
NetherPortalFix_1.12.1-5.3.13.jar
nice-1.12-0.3.0.jar
NotEnoughIDs-1.5.4.2.jar
notenoughwands-1.12-1.7.0.jar
OpenBlocks-1.12.2-1.7.6.jar
OpenComputers-MC1.12.2-1.7.2.67.jar
OpenModsLib-1.12.2-0.11.5.jar
p455w0rdslib-1.12-2.0.29.jar
Pam's HarvestCraft 1.12.2u.jar
Placebo-1.12.2-1.3.4.jar
platforms-1.12.0-1.4.5.jar
ProjectRed-1.12.2-4.9.0.86-Base.jar
ProjectRed-1.12.2-4.9.0.86-fabrication.jar
ProjectRed-1.12.2-4.9.0.86-integration.jar
ProjectRed-1.12.2-4.9.0.86-lighting.jar
ProjectRed-1.12.2-4.9.0.86-mechanical.jar
ProjectRed-1.12.2-4.9.0.86-world.jar
Quark-r1.4-123.jar
QuickLeafDecay-MC1.12.1-1.2.4.jar
rangedpumps-0.5.jar
reauth-3.6.0.jar
RebornCore-1.12.2-3.8.7.295-universal.jar
RedstoneArsenal-1.12.2-2.5.1.13-universal.jar
RedstoneFlux-1.12-2.0.2.3-universal.jar
Reliquary-1.12.2-1.3.4.763.jar
ResourceLoader-MC1.12.1-1.5.3.jar
rftools-1.12-7.50.jar
rftoolsctrl-1.12-1.9.0.jar
rftoolspower-1.12-1.1.0.jar
roots-2-0.104.jar
rustic-1.0.5.jar
secretroomsmod-1.12.2-5.6.4.jar
ShadowMC-1.12-3.8.0.jar
shetiphiancore-1.12.0-3.5.6.jar
Signals-1.12.2-1.2.2-5-universal.jar
Simple-Void-World-1.12-1.2.0.9-universal.jar
SimplyJetpacks2-1.12.2-2.2.5.39.jar
Snad-1.12.1-1.7.09.16a.jar
sonarcore-1.12.2-5.0.10.jar
sonarcore-1.12.2-5.0.13-11.jar.disabled
SoulShards-TOW-1.12-2.7.6-56.jar
SplashAnimation-0.1.0.jar
StevesCarts-1.12.2-2.4.20.99.jar
StorageDrawers-1.12.2-5.3.6.jar
StorageDrawersExtras-1.12-3.1.0.jar
TConstruct-1.12.2-2.10.1.84.jar
tesla-core-lib-1.12.2-1.0.14.jar
Thaumcraft-1.12.2-6.1.BETA16.jar
ThaumicInventoryScanning_1.12.2-2.0.10.jar
ThaumicJEI-1.12.2-1.3.1-12.jar
theoneprobe-1.12-1.4.23.jar
ThermalCultivation-1.12.2-0.3.0.7-universal.jar
ThermalDynamics-1.12.2-2.5.1.14-universal.jar
ThermalExpansion-1.12.2-5.5.0.29-universal.jar
ThermalFoundation-1.12.2-2.5.0.19-universal.jar
ThermalInnovation-1.12.2-0.3.0.7-universal.jar
thutcore-1.12.2-5.16.3.jar
thuttech-1.12.2-6.0.16.jar
TinkerToolLeveling-1.12-1.0.4.jar
TipTheScales-1.12.2-1.0.1.jar
topaddons-1.12.2-1.7.0.jar
torchmaster_1.12.2-1.6.4.62.jar
Translocators-1.12.2-2.5.0.70-universal.jar
Traverse-1.12.2-1.5.3-58.jar
twilightforest-1.12.2-3.7.424-universal.jar
UniDict-1.12.2-2.5c.jar
valkyrielib-1.12.2-2.0.11a.jar
WanionLib-1.12.2-1.5.jar
Waystones_1.12.2-4.0.43.jar
WirelessCraftingTerminal-1.12.2-3.9.64.jar
xnet-1.12-1.7.0.jar
Xtones-1.12-1.0.8-11.jar
YABBA-1.1.2.8.jar
zerocore-1.12-0.1.2.2.jar

• Minecraft Version: 1.12.2
• AE2 Version: appliedenergistics2-rv5-stable-11
• Forge Version: Forge14.23.4.2705

Also replicable with just a drive, terminal, and formation plane: https://i.imgur.com/qgVO0Lr.mp4

this is most definitive another mod messing with the events, try a binary search by repeatedly removing and readding mods depending on if the issue persist or not until you have the culprit or a set of a few mods.

A known offender in the past was extracells if i remember correct

A bug/conflict in Flux Networks, of all things... Thanks for the replies.