diff --git a/Libraries/LibWeb/Bindings/MainThreadVM.cpp b/Libraries/LibWeb/Bindings/MainThreadVM.cpp
index dd374d493a7..66e4283bca5 100644
--- a/Libraries/LibWeb/Bindings/MainThreadVM.cpp
+++ b/Libraries/LibWeb/Bindings/MainThreadVM.cpp
@@ -736,7 +736,7 @@ void queue_mutation_observer_microtask(DOM::Document const& document)
}
}
- // 4. If records is not empty, then invoke mo’s callback with « records, mo », and mo. If this throws an exception, catch it, and report the exception.
+ // 4. If records is not empty, then invoke mo’s callback with « records, mo » and "report", and with callback this value mo.
if (!records.is_empty()) {
auto& callback = mutation_observer->callback();
auto& realm = callback.callback_context;
@@ -748,9 +748,7 @@ void queue_mutation_observer_microtask(DOM::Document const& document)
MUST(wrapped_records->create_data_property(property_index, record.ptr()));
}
- auto result = WebIDL::invoke_callback(callback, mutation_observer, wrapped_records, mutation_observer);
- if (result.is_abrupt())
- HTML::report_exception(result, realm);
+ (void)WebIDL::invoke_callback(callback, mutation_observer, WebIDL::ExceptionBehavior::Report, wrapped_records, mutation_observer);
}
}
diff --git a/Tests/LibWeb/Text/expected/wpt-import/dom/nodes/MutationObserver-cross-realm-callback-report-exception.txt b/Tests/LibWeb/Text/expected/wpt-import/dom/nodes/MutationObserver-cross-realm-callback-report-exception.txt
new file mode 100644
index 00000000000..7348cd88464
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/dom/nodes/MutationObserver-cross-realm-callback-report-exception.txt
@@ -0,0 +1,6 @@
+Harness status: OK
+
+Found 1 tests
+
+1 Pass
+Pass MutationObserver reports the exception from its callback in the callback's global object
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/input/wpt-import/dom/nodes/MutationObserver-cross-realm-callback-report-exception.html b/Tests/LibWeb/Text/input/wpt-import/dom/nodes/MutationObserver-cross-realm-callback-report-exception.html
new file mode 100644
index 00000000000..946c795bd34
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/dom/nodes/MutationObserver-cross-realm-callback-report-exception.html
@@ -0,0 +1,32 @@
+
+
+MutationObserver reports the exception from its callback in the callback's global object
+
+
+
+
+
+