Describe the bug

I am seeing items from my main network in my secondary network which has nothing connecting them.
Secondary network is for a mob grinder and has no RS Cables or Ender IO RS Conduits connecting the 2 networks. Closing the RS Grid UI and then reopening it again will reset to what the 2nd network actually has but then items will start appearing from the other network

I removed the storage disk, There is nothing in my secondary RS network producing ores, coal blocks, bamboo yet they are showing.

How can we reproduce this bug or crash?

1: set up 2 RS networks in milestone 4.14, Have external storages connected to storage drawers draws and have some items in those. also have disks installed for other items.
2: Run something like a mekanism digital miner to pullin ores etc
3: ensure neither RS network are physically connected
4: upgrade RS to beta 1 from milestone 4.14
5: watch the secondary grid to see items appear in it that it cannot possibly see

What Minecraft version is this happening on?

Minecraft 1.21.1

What NeoForge or Fabric version is this happening on?

21.1.139

What Refined Storage version is this happening on?

refinedstorage-neoforge-2.0.0-beta.1

Relevant log output

What I am suspecting is happening, is that where there is a large number of items going in and out of both networks that it could be getting some bleedthrough. the closest any part of the 2 networks get is a 1 block gap where I have Ender IO item conduits transferring items from interfaces on the mob grinding RS network into interfaces on the main RS network.

Closing for now. If you can replicate, please reopen

You might have created an accidental connection unrelated to the update.

I doubt it. because when you close the ui and reopen it, it will show only what is stored in that network's storage, but then after a few seconds items from the 2nd network will appear, not saying it isn't a possibility though.

I don't have time to go on a wild goose chase with reproduction steps like "run something like a digital miner", that would cost me too much time. Can you reproduce yourself with just RS installed and give me more focused steps that I can follow?

Struggling to do this, I cannot replicat the speed and quantity of items going in and out of the two systems.