Kargul

I did further tests. In fact, it works but - it doesn't work with a stone axe. You need an iron pickaxe or a steel pickaxe for a bonus. There could be information that it will not work with a stone ax! Thank you for taking the time to do the test

I had mining volume 3 book, read it. I have unlocked in the perks (Illuminated inscription). There is no 10% bonus. Yes! On the new save in creative mode (to speed up the acquisition of the book) it is the same.

without any mods A19.6 B8 New game, same, it's not the save's fault

I had a cup of coffee, according to the description I should be collecting 10% more ore. During the test digging of the coal. Coal Block: 80 Coal, 22 Stone. After drinking coffee, the same thing.