% out/gn/Ladybird.app/Contents/MacOS/headless-browser --resources $PWD/out/gn/Ladybird.app/Contents/Resources --dump-failed-ref-tests --run-tests $PWD/Tests/LibWeb -f Tests/LibWeb/Text/input/usvstring-url-reflection.html
ProcessManager::add_process(SQLServer, 84656)
ProcessManager::add_process(RequestServer, 84657)
1100223.277 RequestServer(84657): Loaded 145 of 145 (100%) provided CA Certificates
Running 1 tests...
1/1: Text/input/usvstring-url-reflection.htmlProcessManager::add_process(WebContent, 84658)
1100223.345 WebContent(84658): ResourceLoader: Failed load of: "file:///Users/thakis/src/serenity/Tests/LibWeb/Text/input/%EF%BF%BDa%EF%BF%BDb%EF%BF%BD", Error: No such file or directory (errno=2), Duration: 1ms
1100223.345 WebContent(84658): ResourceLoader: Failed load of: "file:///Users/thakis/src/serenity/Tests/LibWeb/Text/input/%EF%BF%BDa%EF%BF%BDb%EF%BF%BD", Error: No such file or directory (errno=2), Duration: 1ms
1100223.345 WebContent(84658): ResourceLoader: Failed load of: "file:///Users/thakis/src/serenity/Tests/LibWeb/Text/input/%EF%BF%BDa%EF%BF%BDb%EF%BF%BD", Error: No such file or directory (errno=2), Duration: 1ms
Done!
==================================================
Pass: 1, Fail: 0, Skipped: 0, Timeout: 0
==================================================
VERIFICATION FAILED: m_ptr at ../../AK/NonnullOwnPtr.h:98
0   liblagom-ak.dylib                   0x000000010013d778 ak_verification_failed + 216
1   headless-browser                    0x000000010008a804 AK::Function<AK::String (URL::URL const&, Web::Cookie::Source)>::CallableWrapper<HeadlessWebContentView::HeadlessWebContentView(AK::NonnullRefPtr<WebView::Database>, AK::NonnullOwnPtr<WebView::CookieJar>, AK::RefPtr<Protocol::RequestClient>)::'lambda'(auto const&, auto)>::destroy() + 0
2   liblagom-webview.dylib              0x000000010074bd68 AK::Function<AK::String (URL::URL const&, Web::Cookie::Source)>::operator()(URL::URL const&, Web::Cookie::Source) const + 76
3   liblagom-webview.dylib              0x000000010074bc2c WebView::WebContentClient::did_request_cookie(unsigned long long, URL::URL const&, Web::Cookie::Source) + 116
4   liblagom-webview.dylib              0x000000010074fa20 WebContentClientStub::handle(IPC::Message const&) + 1256
5   liblagom-ipc.dylib                  0x00000001002547d8 IPC::ConnectionBase::handle_messages() + 224
6   liblagom-core.dylib                 0x0000000100285cb4 AK::Function<void ()>::operator()() const + 76
7   liblagom-core.dylib                 0x000000010029d3bc Core::ThreadEventQueue::process() + 376
8   liblagom-webview.dylib              0x000000010071d614 void WebView::Database::execute_statement<AK::UnixDateTime&>(unsigned long long, AK::Function<void (AK::Span<SQL::Value const>)>, AK::Function<void ()>, AK::Function<void (AK::StringView)>, AK::UnixDateTime&) + 1312
9   liblagom-webview.dylib              0x000000010071ce54 AK::Function<void ()>::CallableWrapper<WebView::CookieJar::CookieJar(AK::Optional<WebView::CookieJar::PersistedStorage>)::$_0>::call() + 128
10  liblagom-webview.dylib              0x00000001007181ac AK::Function<void ()>::operator()() const + 76
11  liblagom-webview.dylib              0x00000001007180d8 WebView::CookieJar::~CookieJar() + 60
12  headless-browser                    0x000000010008ab50 HeadlessWebContentView::~HeadlessWebContentView() + 76
13  headless-browser                    0x0000000100087cd0 serenity_main(Main::Arguments) + 8132
14  headless-browser                    0x000000010009c04c main + 216
15  dyld                                0x000000019e458274 start + 2840
1100223.346 WebContent(84658): WebContent client disconnected during DidRequestCookie. Exiting peacefully.

Passes if run together with other tests. Has been failing when running isolated since this test was added.