I took some modules from a tank for building on fulgora. When I was done I entered the tank and tried to place the modules back in the tank inventory. The module appeared in both the tank inventory and the logistics trash. I could then remove the trashed modules and repeat to increase the amount in the tank inventory. It appears to be pretty sporadic since once I get an entire stack in the tank inventory the bug stops. I am also unable to replicate in the editor on a new game; sorry I'm uploading the entire save.
I would expect the modules to only go into the tank inventory until the requested amount was present then overflow to the logistics trash. In the provided save you can move quality or productivity modules from the character inventory to the tank with a ctrl + left click. The game is 1000x science cost and increased resource spawning but otherwise vanilla space age.
[2.0.76] Item duplication in tank
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kodosTheDestroyer
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[2.0.76] Item duplication in tank
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- vani1000.zip
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- factorio-current.log
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Re: [2.0.76] Item duplication in tank
What are the steps to reproduce what you're experiencing?
If you want to get ahold of me I'm almost always on Discord.
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kodosTheDestroyer
- Manual Inserter

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- Joined: Sat Mar 21, 2026 11:53 pm
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Re: [2.0.76] Item duplication in tank
Unfortunately I couldn't quickly replicate it in the editor. If you load up the attached save and ctrl+left click to move the quality or productivity modules (rare, tier 2) to the tank from the player inventory you should see the module appear in both the tank main inventory and the trash slots. The duplication comes from removing the trash slot item and repeating the ctrl+left click from player inventory.
Re: [2.0.76] Item duplication in tank
I am not able to reproduce any duplication. The tank has two stacks of modules: one with 16 and one with 34. When putting the modules into the tank it exceeds the auto-trash amount of 50 and the 4 are put into the trash slots from the stack of 34.
If you want to get ahold of me I'm almost always on Discord.
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kodosTheDestroyer
- Manual Inserter

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Re: [2.0.76] Item duplication in tank
O man, I completely missed the second stacks!!! Thanks for checking into it, sorry about the false report.
