URL bar query string parameters are sent as null instead of their actual values

Description

When entering a URL with a query string directly into the URL bar (e.g. http://localhost:8000/items/?q=1), the value is sent as null instead of 1, so the server receives {"q": null} (or the equivalent in the framework being used).

The same request works correctly when the parameter is added through the Query tab instead of being included in the URL bar.

Steps to reproduce

1. Open Posting.
2. Enter http://localhost:8000/items/?q=1 in the URL bar (method: GET).
3. Send the request.
4. Inspect the response or the server logs.

Expected behaviour

The q=1 query parameter is preserved and sent as {"q": "1"} (or equivalent).

Actual behaviour

The query string in the URL bar is dropped/replaced and the server receives {"q": null}.

Workaround

Moving the parameter into the Query tab (key q, value 1) and keeping the URL clean (http://localhost:8000/items/) makes the request work as expected.