[plugin: wp-tiles] post_query doesnt work

Post_query seems doesnt work. whatever the category I specify it just shows all the categories.
there is the code:
[wp-tiles post_type="post" posts_query="category=3" orderby="date" order="DESC" grids="3x3" ]

Category 3 is “cars” but it also shows “motorbykes”

Another thing is that eventhough i created a simetric grid/template called “3×3” when i specify the post_query parameter seems to change itself to another.

url: