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+# Minimal Reproducible Example
+
+Multiple issues are shown with this example.
+
+---
+
+Incorrect related filters:
+
+Suggestions for related filters should only contain categories used in the
+items in the search result, not all categories happening to contain tags in
+the results which have the same name.
+
+## Reproduction steps
+
+1. Search for `animal`.
+
+## Expected result
+
+The related filters suggestions should only suggest `animal:bat`, but not
+`object:bat`, since the only result does not have `object:bat`.
+
+## Actual result
+
+Both `animal:bat` and `object:bat` are suggested as related filters.
+The latter is incorrect.
+
+## Version info
+
+Bug present in ldgallery v2.2.
+
+---
+
+Incorrect related filters:
+
+Excluding a category should result in all tags in that category being excluded
+from the related filters suggestions, even if they happen to contain a tag with
+the same name.
+
+## Reproduction steps
+
+1. Search for `-animal`.
+
+## Expected result
+
+The `animal` category should not show up in the related filters suggestions.
+
+## Actual result
+
+The `animal` category still shows up in addition to the `object` category.
+
+## Version info
+
+Bug present in ldgallery v2.2.
+
+---
+
+Incorrect search results and related filters:
+
+Excluding a category should only exclude tags in that category.
+It should not exclude items having a tag with the same name in other
+categories.
+
+## Reproduction steps
+
+1. Search for `-animal`.
+
+## Expected result
+
+`baseball_bat.md` and `cricket_bat.md` should appear in the search results,
+because they do not have any tag in the category `animal`.
+
+## Actual result
+
+The search yields no result at all.
+Strangely enough, the tag `bat` is still being suggested in both categories
+in the related filters.
+
+## Version info
+
+Bug present in ldgallery v2.2.
+
+---
+
+Incorrect search results:
+
+Excluding a tag within a category should only exclude tags in that category.
+It should not exclude items having a tag with the same name in other
+categories.
+
+## Reproduction steps
+
+1. Search for `-animal:bat`.
+
+## Expected result
+
+`baseball_bat.md` and `cricket_bat.md` should appear in the search results,
+because they do not have that tag in the category `animal`, but `object`.
+
+## Actual result
+
+The search yields no result at all.
+
+## Version info
+
+Bug present in ldgallery v2.2.