Hello
first off all , I only can discribe this bug , because I dont have some logs or other.

So , in the Picture you can see 2x the same line with the same pattern . Myself create only once of this and the other one was stocked with repices from thermal dynamics. (like super-Laminar Fluiducts or hardened fluiducts)

In the second picture you can see how I build the autocrafting modules (installed with black Dense cables).

So , now something that I do in the time .
-I restarted the game often
-I put the pattern in the interfaces by the interface Terminal
-I sortet the patterns with the terminal
-I updated some other mods (Reborn Core , Chisel)
-reconnect the connection often (from the cable)
-design my base

I hope you can do something with this informations . Ask me if you need more , then I try to find more :D

• Minecraft Version: 1.12.1
• AE2 Version: appliedenergistics2-rv5-alpha-4
• Forge Version: 1.12.1-forge1.12.1-14.22.1.2478

With forge being unable to guarantee stable and uncorrupted data, there is no option for us to prevent and/or fix it in any case.