Related Issue: CyclopsMC/IntegratedDynamics#1003

I'm not sure if there is a more general underlying issue here, but this is the procedure that led to this specific problem;

1. Setup as described in InDy#1003
2. Use the NBT Extractor to extract Offers.Recipes (which is a list of NBT entries)
3. Take a head of the extracted recipe list
4. Insert the first extracted recipe (which is NBT data) into the NBT Extractor

While testing this exact procedure to verify this was reproducible, it suddenly started working. However, relogging, inserting the Villager NBT card into the extractor, placing the Villager NBT card back into a display frame, and then inserting the head (extracted recipe) card back into the extractor seems to be a reliable way to cause it to not work. In the same line though, relogging with the head card still in the extractor, or placing it back into the extractor after relogging, seems to cause it to work again.

Thanks for reporting. I have failed to reproduce this in single player. I will try multiplayer now.

Oh I know why.

NBT Extractors will remember the last scroll position. Therefore, you just need to scroll up.

I guess I will make it scroll to the top automatically when out of view.

Done