I don't know if this was fixed in last night's update, but I just completed the HSS-G ingots quest on 1.13.1 a few days ago, which ended up marking the entire Heating Coils section as completed. I saw the message on Discord about people finding quest issues, but not making GH issues out of them, so I thought I'd do my part 🙂

I can confirm that this issue does not occur on the latest version of GTCEu Modern Community Pack. (1.13.2) @Deepacat Please close the issue.