Fixed duplication bug in the Interface. Fixes #3414

This was a problem with returning the remainder if there are valid storages, but they are all in extract-only (the #insert call never propagates to IStorage in that case).

If stack.size differs from size, the stack with its wrong size is returned literally as remainder in that case, which breaks an assumption in the interface.

CHANGELOG.md

@@ -7,6 +7,10 @@ to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
 
+### Fixed
+
+- Fixed duplication bug in the Interface.
+
 ## [v1.11.3] - 2022-12-20
 
 ### Fixed

src/main/java/com/refinedmods/refinedstorage/apiimpl/network/Network.java

@@ -273,7 +273,7 @@ public class Network implements INetwork, IRedstoneConfigurable {
             return ItemHandlerHelper.copyStackWithSize(stack, size);
         }
 
-        ItemStack remainder = stack;
+        ItemStack remainder = ItemHandlerHelper.copyStackWithSize(stack, size);
 
         int inserted = 0;
         int insertedExternally = 0;
@@ -380,7 +380,7 @@ public class Network implements INetwork, IRedstoneConfigurable {
             return StackUtils.copy(stack, size);
         }
 
-        FluidStack remainder = stack;
+        FluidStack remainder = StackUtils.copy(stack, size);
 
         int inserted = 0;
         int insertedExternally = 0;