Logic trouble in filters

Hello.
I am using your free version of this plugin. I have more than 8000 products on page. Products has product categories and a few attributes, which I am using for filtering. I am using:
– size
– color
– manufacturer (brand)
– sport (for what sport is product determined, f.e.: balls for football, swim glasses for swimming etc.)

I meet with logic trouble. When I select category “Men” I will get to products archive with only Men clothing&shoes. That’s good. Now, when I select in your filter size XS, I get 4 products, that’s ok: https://snipboard.io/Rc4KQ2.jpg There are only 4 products with XS size (Size == Ve?kos? in my language)

When I try to add a color (Farba in my language), I am getting uncorrect counts, and uncorrects products in results. It seems, indexing filters solved this problem, but only in counts. So now I have 4 products with size XS and I am getting in colors filter:
White (1)
Black(2)
Blue(1)
That’s ok. Now, when I click the “Blue” color, I am getting back about 200 products, what is incorrect. I should get back only 1 product, the product, which is XS si?e and blue color. Instead of this I am getting blue colors, but each sizes. XS is ignored from this moment.

I am guessing, this has something to do with logic filter, I have set “OR”, when I rewrite “or” to “and” in URL’s query string, I get the only 1 product back. That seems to be ok.

However I don’t know, what happend, if I choose more values from one filter? What if I select
– XS,S,M,L in sizes
– Blue in colors?

Will I get result products, which has ONE OF XS,S,M,L and color BLUE

Or

Wil I get result products, which has ALL OF XS,S,M,L and color BLUE?

I would need the first option.

Thank you