When trying to get the research papers in the thaumonomicon, it will tell you that you gained the paper but won't actually give you one, consuming the paper like normal.

Oh...
It should automatically give you research completion without any notes and doesn't require paper...
Okay, sounds wierd, will test it out today.

Can't reproduce:

Why that happens? Is it lastest v0.11.3? It was caused by some other mods? What need to be done for this to happen?

yeah it's on v0.11.3, I don't know what's going on, the magic material researches appeared when I scanned the respective items, but it acted like it needed to be properly researched

Edit: Could it be due to the different research method you are using? from the above image you are using the research point buy system rather than the minigame which is the default.

Edit2: Thaumcraft's hard research difficulty is the culprit. (you must research everything via table.)

Edit2: Thaumcraft's hard research difficulty is the culprit. (you must research everything via table.)

Yup, you are 110% right.

Originally, you should have simply picked this study at the cost of 0 per each aspect (cuz I really hate unnecessary researches and waste of aspects for nothing). I thought it would be funny.
But in reality, at the hard difficulty level, will be no peaceful solution, and it tries to find the aspect with the highest cost. Search algorithm is written in such a way that everything less or equal to zero is a joke for it (base checking cost is basically 0, and to be counted, aspect cost must be greater than 0).
So, it just fails, return null, gives nothing and dies from the cringe.

TLDR: Will be fixed in next upd, thanks you for reporting this, I would never have found this on my own.
If you need a version with a fix ASAP, I can quickly compile a dev build, but there's a lot of unfinished content here which at this stage looks like it's useless and sometimes have 0 gameplay sense.

I don't need a fix, I bumped the config from hard to normal, feels a lot better that way anyways not having to do the minigame for literally everything.

Unrelated: The illusion cap research is fucking hell, me and a friend who is much better than me couldn't figure it out so I decided to use gadomancy's auto-research item and a lot of cognitio

Unrelated: The illusion cap research is fucking hell, me and a friend who is much better than me couldn't figure it out so I decided to use gadomancy's auto-research item and a lot of cognitio

Yeah that's kinda the point!
I'm glad you liked it! I specifically tried to design them in the most buttcracking way :)
Imagine my face when I tried to first come up with this and then solve it.