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Issue description:

Basic Logistic Transporter becomes disconnected. Items stop going through. Fixed with reconfigurater and then items begin transporting. Pipe IS on the edge of a chunk border.

Steps to reproduce:

1. Happens randomly.

Version (make sure you are on the latest version before reporting):

Forge: 14.23.5.2838
Mekanism: 1.12.2-9.7.9.380
Other relevant version:

If a (crash)log is relevant for this issue, link it here: (It's almost always relevant)

[gist/pastebin/etc link here]

Closing this as it was fixed quite a while ago, and in terms of the rendering breaking I have yet to see this happen in 1.15 after having rewritten the rendering code.

This bug isn't totally fixed (I've built my own version that includes the fix).

What is really fixed:

• When two transporters are on a chunk border they will no longer disconnect randomly when leaving and re-entering the area.

What is still broken:

• When a basic mechanical pipe is connected to a basic fluid tank on a chunk border, the pipe sometimes disconnect when leaving and re-entering the area. When I placed a block near it to update it, it reconnected.
• Maybe this bug affects every kind of transporters (not just the basic mechanical pipe) and every kind of machines (not just the basic fluid tank). I haven't done advanced tests.

You can find the "home baked" version here: MekanismAll-1.12.2-9.8.0.homebaked.zip

I will try to look at it some more at some point, slightly busy at the moment. I probably just forgot to add a check for if it is connected to something else (not just if it is connected to another pipe).

@Cl00e9ment I am not able to reproduce the issue when connecting to other blocks. Are you able to reliably reproduce it, and if so could you upload a world file with a setup you can reproduce it on.

The issue is reproducible, but it will not occur every time. I tried to leave and re-enter the area during 15 min in order to see the bug and record it: https://www.youtube.com/watch?v=RmN_XlXAVc8

You can find the world file here: [map] Mod Pack Industriel.zip

The mods that I used:

• ae2stuff-0.7.0.4-mc1.12.2
• AE2WTLib-1.12.2-1.0.30
• appliedenergistics2-rv6-stable-6
• bdlib-1.14.3.12-mc1.12.2
• BetterBuildersWands-1.12.2-0.13.2.271+5997513
• BetterFoliage-MC1.12-2.2.0
• BiomesOPlenty-1.12.2-7.0.1.2439-universal
• ChestTransporter-1.12.2-2.8.8
• ChickenChunks-1.12.2-2.4.1.73-universal
• Chisel-MC1.12.2-0.2.1.35
• CodeChickenLib-1.12.2-3.2.2.353-universal
• CoFHCore-1.12.2-4.6.3.27-universal
• CoFHWorld-1.12.2-1.3.1.7-universal
• CTM-MC1.12.2-0.3.3.22
• DrZharks MoCreatures Mod-12.0.5
• DynamicTrees-1.12.2-0.9.5
• ExtraCells-1.12.2-2.6.2a
• FastLeafDecay-v14
• Forgelin-1.8.3
• ForgeMultipart-1.12.2-2.6.1.81-universal
• GraveStone-1.12.2-Graves-1.3.1
• Hwyla-1.8.26-B41_1.12.2
• industrialforegoing-1.12.2-1.12.13-237
• InventoryTweaks-1.63
• ironchest-1.12.2-7.0.71.846
• jei_1.12.2-4.15.0.268
• journeymap-1.12.2-5.5.4
• JustEnoughResources-1.12.2-0.9.2.60
• MekanismAll-1.12.2-9.8.0.homebaked
• ModernLights-1.0.3_1.12
• modnametooltip_1.12.2-1.10.1
• MrTJPCore-1.12.2-2.1.4.43-universal
• NotEnoughIDs-1.5.4.4
• OptiFine_1.12.2_HD_U_E3
• p455w0rdslib-1.12.2-2.2.156
• ProjectRed-1.12.2-4.9.4.120-Base
• ProjectRed-1.12.2-4.9.4.120-integration
• RedstoneFlux-1.12-2.1.0.6-universal
• tesla-core-lib-1.12.2-1.0.15
• ThermalCultivation-1.12.2-0.3.3.12-universal
• ThermalDynamics-1.12.2-2.5.5.21-universal
• ThermalExpansion-1.12.2-5.5.4.43-universal
• ThermalFoundation-1.12.2-2.6.3.27-universal
• torchmaster_1.12.2-1.7.1.74
• WirelessCraftingTerminal-1.12.2-3.12.93

You can also download the complete setup here (a MultiMC instance that contains the map, the mods and their config): [MultiMC instance] Mod Pack Industriel.zip

Yeah, I just got a crash caused by a NPE from Mekanism. Here is the logs: https://pastebin.com/rSikNFrZ.

Yup that should be fixed by f887183

Thank you that is useful, I will continue to look into it some more so far trying to reproduce it I ran into one random crash so made a hotfix for that at least, so at least some good came of this. Though my suspicion is it may be hard to track down it not reconnecting to tanks given it does not happen every time.

I can reproduce this, after opening the world, the Logistic Transporters that are adjacent to chunk boarders disconnects randomly, sometimes items can keep passing (Image 1), but in most times they can't (Image 2). I have to break and replace it, then it works again (Image 3).

As pupnewfster said previously, this bug is partially fixed in the development version.

You can download this version here but it's not an official version so use it at your own peril.

Fix included in 9.8.1. Note: This does not fix the low reproduction rate where sometimes the cables don't reconnect to tanks etc. I honestly think that may be a bug on the tank than the transmitter.