From Debian 13.2 (Trixie) + Bash + curl 8.14.1:

  $ curl -s 'https://httpbingo.org/get?' | jq .url
  "https://httpbingo.org/get"

But on macOS + Bash/Zsh + curl 8.7.1:

  $ curl -s 'https://httpbingo.org/get?' | jq .url
  "https://httpbingo.org/get?"

I see some related changes here: https://github.com/curl/curl/commit/3eac21d