Low Search results not showing all entries from a category

Question

I have a search form composed of category select fields. When choosing a particular category (2 Bedroom / 2 Bath) the results page isn't showing all entries. But, when viewing the "all floor plans" page and selecting "Two Bedrooms" I can see every entry.

Any ideas on why the Low Search form wouldn't be showing every entry from a selected category? The form seems to work, as it shows some of the entries, but why wouldn't it show all entries?

Here's the search form where you can select the 2 Bedroom / 2 Bath option under "Number of bedrooms?":

http://l45living.com/floor-plans

Here's the page listing all "Two Bedrooms" entries:

http://l45living.com/floor-plans/all/two-bedrooms

Notice how there are many more entries displayed on the "all/two-bedrooms" page. Template code (edited for brevity):

{exp:low_search:form
  form_id="floor-plan-search"
  query="{freebie_3}"
  result_page="/floor-plans/search#floor-plans"
}
  <select name="category[]">
    <option value="">Show me all the options!</option>
    {exp:channel:categories
      category_group="1"
      show="not 4"
      style="linear"
    }
      <option value="{category_id}"{if low_search_category ~ '/\b'.category_id.'\b/'} selected{/if}>
        {category_name}
      </option>
    {/exp:channel:categories}
  </select>
{/exp:low_search:form}

{exp:low_search:results
  channel="units"
  orderby="title"
  query="{freebie_3}"
  require_all="category"
  sort="asc"
}
  ...results shown here...
{/exp:low_search:results}

Answer 1

The URI /floor-plans/all/two-bedrooms doesn't look like a Low Search query, and therefore the Results tag won't filter entries. It's looking like it works as designed. This URL does seem to be showing the results you'd expect.

Edit Turns out there was another category selected so the form would filter by both categories rather than the one. Removing the other one solved the issue.