Could you reload the filters which are not currently used in the filtering process with values taken from the remaining items?

In this way, the set filters will filter the remaining one with such values which will not lead to empty results. For the spells page:

1. I selected 1st for Spell level
2. I pressed Filter Spells
3. I selected Banishment for Spell tags
4. 1 pressed Filter Spells
5. Bingo! :  YOU FAILED YOUR INVESTIGATION CHECK.

What I propose is that after I selected the 1st for Spell Level and pressed Filter Spells, the remaining filters values are to be reloaded in such a way the show not only the values which you can find in the remaining articles (Banishment disappears from Spell tags). In this way. I can see exactly which Spell tags correspond to the 1st level spell.

There is a similar problem for the filter in the items page.