Pattern P2P crashes when piping pattern into another Pattern P2P

[flintseal]

Minecraft Version: 1.20.1
MAE2 Version: mae2-2.0.0

Full Crash Report

I was attempting, in my testing world, to see if the Pattern P2P would split the inputs into subnets with the entrance to the subnet being another Pattern P2P to see if I could recursively subnet one pattern provider. However, as soon as I hit the crafting request, even if it's just one-to-one on the Pattern P2P networks, the game crashes with a Stack Overflow error.

Even if this is unintended behavior that could be equated to building a large controller block and just having dozens of P2P outputs, I would prefer it not working over crashing.

The Setup:

Blue cable -> Main Network with an ME Drive, Applied Flux network to provide power, and Infinity Cell to provide cobblestone. The pattern provider has one pattern to cook cobblestone into stone.
Red cable -> EU P2P for power to the furnace.
Green cable -> Pattern P2P subnet from Pattern Provider to another Pattern P2P
Orange cable -> Pattern P2P subnet from Pattern P2P of green subnet to Advanced Electric Furnace II from Gregtech CEu Modern

[AE2-Enthusiast]

I probably won't be able to get to this in a bit (busy + would like to fix multi p2ps first, I've been running into issues with them), but could you make sure the input and output sides are right? I recently saw a 1.12 bug where the p2ps would crash if an output was put into another output. There should be recursion checks in this, but maybe that somehow bypasses it.

Also could you try with multi pattern p2ps? This is actually an intended/emergent mechanic and I know it should work somehow. I definitely tested it, and if not with single p2ps then with multi p2ps.

[flintseal]

The input and output sides were configured correctly. I also tried replacing the Advanced Electric Furnace II with a Redstone Furnace from Thermal Foundations, but that also crashed.

Upon further testing, the recursion problem only occurs if a single Pattern P2P feeds into another single Pattern P2P. If a single feeds into a multiple, a multiple into a single, or a multiple into a multiple, then the items will go into the machine fine. However, with both a Gregtech Furnace and a Redstone Furnace, I noticed that the item outputs, even if allowing inputs and auto output on the side of the P2P on any of the recursive setups wouldn't return the product.

They only returned when there was only a P2P from the main network to the machine. I have no clue what is causing this as it isn't a crash and thus has no stack trace to follow.