OK, I was finally able to recreate the problem.
One of my testing mods was actually changing the behavior of the Thaumatorium for some reason.
In any case, my idea for a quick fix does not work.
So, for the time being do not use Coils with the Thaumatorium unless you plan to remove them before server restarts.
We will see if Azanor will fix the issue, and otherwise I will look into a better solution.
Maybe you can update the github with your error etc for Azanor to look at?