Responses that contain a lone LF and are loaded as subresources (e.g., image) load forever and do not fire a load/error event. Example response: ``` HTTP/1.1 200 \ntiming-allow-origin: * more-headers body ``` URL: http://sub.headers.websec.saarland/_hp/tests/perfAPI-tao.sub.html?resp_type=parsing&browser_id=1&label=TAO&first_id=41834&last_id=41843&scheme=http&t_resp_id=41838&t_element_relation=img_direct&t_resp_origin=https://headers.webappsec.eu - Loads for 5 seconds, then the test aborts - Firefox and Chromium fail the request immediately and fire an error event Related issue with Fetch: https://bugs.webkit.org/show_bug.cgi?id=272748