on Screenshot you see a red sign for this category we are in.
But the Subcategories are all "First-Level-Entries" like (Automarken,Heckzelte, Sonnensegel and so on..) are show in category-view. And if i go to "Sonnensegel -> Toyota" nothing change in View..
- When I select TOP level term (term having no parent) - what is your expected result?
i would see the Subcategories of selected TOP level term as filter in view
- When I select term VW T6 - what is your expected result?
i would see the Subcategories (sibblings) of same Top level term as filter in view
apropos: when comes "filter taxonomy view by taxonomy term" in toolset. I think its a very good feature
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Thanks for the suggestion but this is not something can be implemented.
Because its illegal to display archive posts of taxonomy term A on taxonomy term B. That is why you can not add filter to it. If you are displaying taxonomy archive page for the term A, you can not list term B posts on term A archive.
The only quick way I suggest is create a view and add taxonomy filter to it and add this view to a new page.