Site filter not working when using API Search

Description of the issue:

API server is not applying site filter.

Brave Version (check About Brave): I’m using the API Playground for testing

Operating System: Testing playground in Chome

Hi,

I’m trying to some queries filtered by site. This is the query I’m using in the search api playground:

curl -s --compressed “https://api.search.brave.com/res/v1/web/search?\
q=%22masterThesis%22%2B%22Disserta%C3%A7%C3%A3o%2Bde%2Bmestrado%22%2B%22Escola%2Bde%2BDireito%22%2Bsite%253Auminho.pt%252Fentities%252Fpublication%252F%2Bcountry%253APT%26source%3Dweb”
-H “Accept: application/json”
-H “Accept-Encoding: gzip”
-H “x-subscription-token: my_api_key”

The results are somewhat relevant but not all from the site restriction. When I do same query in the browser I get the results as expected. The query:

“masterThesis” “Dissertação de mestrado” “Escola de Direito” site:uminho.pt/entities/publication/ country:PT

Does anyone had a similar issue?
Thanks