When using the system, random whole drives become inaccessible until the drive has been removed and replaced in the ME drive.
The resources and quantities are still visible, just not usable.

To Reproduce
I don't know why this is happening in the first place so I can't be certain how to reproduce it, but this is happening on a typical starter ME system on a multiplayer server.
Expected behavior
Resources should be accessible if they are in the system.

Environment
Multiplayer
appliedenergistics2-rv6-stable-7-extended_life-v0.54.19.jar

• Minecraft Version: 1.12.2
• AE2 Version: 0.54.19
• Forge Version: 14.23.5.2860

Upon further occurrence of the issue, it seems that the ME system randomly decides that it doesn't have an item for autocrafting because something in the pattern has become corrupted. Every time this happens you have to remake the pattern of the item(s) you just tried to request. This is a very critical bug that is outright preventing autocrafting and sometimes item withdrawal from taking place.

Also, patterns created by the auto fill "+ " button seem greatly increase the likelihood of this happening.

Also, patterns created by the auto fill "+ " button seem greatly increase the likelihood of this happening.

Does it happen on the Sponge server

Yes, I believe there are some SpongeForge plugins.

Issue still persists after removing SpongeForge and all plugins.

Do you have the Custom NPCs mod installed?

This also happens to me, it is a single player world and custom npcs isn't installed.

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