AE2 Autocrafting Gunpowder - java.lang.IndexOutOfBoundsException with substitutes active in crafting pattern

[Lumpous]

Java on local PC:
java version "1.8.0_381"
Java(TM) SE Runtime Environment (build 1.8.0_381-b09)
Java HotSpot(TM) 64-Bit Server VM (build 25.381-b09, mixed mode)

Java on Server:
openjdk version "1.8.0_422"
OpenJDK Runtime Environment (build 1.8.0_422-8u422-b05-1~22.04-b05)
OpenJDK 64-Bit Server VM (build 25.422-b05, mixed mode)

ae2-uel-v0.56-7c6ceef.jar
forge-1.12.2-14.23.5.2860.jar

Only tested in MP - can reproduce on every try

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Wanted to craft some gunpowder using AE2 Autocrafting but received a errormessage in clients chat.
(nothing of that message is visible in any serverlog).
[22:36:55] [Client thread/INFO] [STDOUT]: [vazkii.chatflow.handler.MessageMeddler:onMessageReceived:24]: Error: java.util.concurrent.ExecutionException: java.lang.IllegalStateException: java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 [22:36:55] [Client thread/INFO] [net.minecraft.client.gui.GuiNewChat]: [CHAT] Error: java.util.concurrent.ExecutionException: java.lang.IllegalStateException: java.lang.IndexOutOfBoundsException: Index: 0, Size: 0

The pattern is using the recipe:

• 4 pulverized coal from Thermal Foundation
• 5 redstone
  

Upon further inspecting, the recipe was set to use substitutes:

Removed all pulverized charcoal to check if that's the cause, but issue occured again.
Fresh restart of client and server made no change and the errormessage reappeared when substitutes was enabled in recipe.

Removed the "use substitutes" from the pattern and crafting worked like a charm.

latest.log - Errormessage in line 9156 and 9157
debug.log

xJon/The-1.12.2-Pack#986

[Lumpous]

Issue can reproduced in SP also - allowing substitutes caues the same error.