diff --git a/testing/web-platform/meta/content-security-policy/securitypolicyviolation/idlharness.window.js.ini b/testing/web-platform/meta/content-security-policy/securitypolicyviolation/idlharness.window.js.ini
index 92d66f939657..33b053794e2d 100644
--- a/testing/web-platform/meta/content-security-policy/securitypolicyviolation/idlharness.window.js.ini
+++ b/testing/web-platform/meta/content-security-policy/securitypolicyviolation/idlharness.window.js.ini
@@ -49,3 +49,6 @@
 
   [CSPViolationReportBody interface: existence and properties of interface prototype object's "constructor" property]
     expected: FAIL
+
+  [CSPViolationReportBody interface: operation toJSON()]
+    expected: FAIL
diff --git a/testing/web-platform/meta/css/cssom-view/idlharness.html.ini b/testing/web-platform/meta/css/cssom-view/idlharness.html.ini
index ca95607de2f9..6cecb46f869c 100644
--- a/testing/web-platform/meta/css/cssom-view/idlharness.html.ini
+++ b/testing/web-platform/meta/css/cssom-view/idlharness.html.ini
@@ -38,3 +38,24 @@
 
   [Element interface: calling isVisible(optional IsVisibleOptions) on document.createElementNS("x", "y") with too few arguments must throw TypeError]
     expected: FAIL
+
+  [Element interface: document.createElement("div") must inherit property "checkVisibility(optional CheckVisibilityOptions)" with the proper type]
+    expected: FAIL
+
+  [Element interface: calling checkVisibility(optional CheckVisibilityOptions) on document.createElement("div") with too few arguments must throw TypeError]
+    expected: FAIL
+
+  [Element interface: document.createElement("img") must inherit property "checkVisibility(optional CheckVisibilityOptions)" with the proper type]
+    expected: FAIL
+
+  [Element interface: calling checkVisibility(optional CheckVisibilityOptions) on document.createElement("img") with too few arguments must throw TypeError]
+    expected: FAIL
+
+  [Element interface: operation checkVisibility(optional CheckVisibilityOptions)]
+    expected: FAIL
+
+  [Element interface: document.createElementNS("x", "y") must inherit property "checkVisibility(optional CheckVisibilityOptions)" with the proper type]
+    expected: FAIL
+
+  [Element interface: calling checkVisibility(optional CheckVisibilityOptions) on document.createElementNS("x", "y") with too few arguments must throw TypeError]
+    expected: FAIL
diff --git a/testing/web-platform/meta/media-source/idlharness.window.js.ini b/testing/web-platform/meta/media-source/idlharness.window.js.ini
index 26738c3e77cd..3186a3fa7aff 100644
--- a/testing/web-platform/meta/media-source/idlharness.window.js.ini
+++ b/testing/web-platform/meta/media-source/idlharness.window.js.ini
@@ -37,3 +37,27 @@
 
   [MediaSource interface: attribute canConstructInDedicatedWorker]
     expected: FAIL
+
+  [MediaSource interface: operation getHandle()]
+    expected: FAIL
+
+  [MediaSource interface: mediaSource must inherit property "getHandle()" with the proper type]
+    expected: FAIL
+
+  [MediaSourceHandle interface: existence and properties of interface object]
+    expected: FAIL
+
+  [MediaSourceHandle interface object length]
+    expected: FAIL
+
+  [MediaSourceHandle interface object name]
+    expected: FAIL
+
+  [MediaSourceHandle interface: existence and properties of interface prototype object]
+    expected: FAIL
+
+  [MediaSourceHandle interface: existence and properties of interface prototype object's "constructor" property]
+    expected: FAIL
+
+  [MediaSourceHandle interface: existence and properties of interface prototype object's @@unscopables property]
+    expected: FAIL
diff --git a/testing/web-platform/meta/touch-events/idlharness.window.js.ini b/testing/web-platform/meta/touch-events/idlharness.window.js.ini
index a6eb7b23a72d..361f1a0de830 100644
--- a/testing/web-platform/meta/touch-events/idlharness.window.js.ini
+++ b/testing/web-platform/meta/touch-events/idlharness.window.js.ini
@@ -149,3 +149,11 @@
   [GlobalEventHandlers interface: window must inherit property "ontouchcancel" with the proper type]
     expected: FAIL
 
+  [TouchEvent interface: operation getModifierState(DOMString)]
+    expected: FAIL
+
+  [TouchEvent interface: new TouchEvent("name") must inherit property "getModifierState(DOMString)" with the proper type]
+    expected: FAIL
+
+  [TouchEvent interface: calling getModifierState(DOMString) on new TouchEvent("name") with too few arguments must throw TypeError]
+    expected: FAIL
diff --git a/testing/web-platform/meta/webnn/idlharness.https.any.js.ini b/testing/web-platform/meta/webnn/idlharness.https.any.js.ini
index 22628278235d..ca63e9f7587f 100644
--- a/testing/web-platform/meta/webnn/idlharness.https.any.js.ini
+++ b/testing/web-platform/meta/webnn/idlharness.https.any.js.ini
@@ -872,6 +872,15 @@
   [MLCommandEncoder interface: operation finish(optional GPUCommandBufferDescriptor)]
     expected: FAIL
 
+  [MLGraphBuilder interface: operation buildAsync(MLNamedOperands)]
+    expected: FAIL
+
+  [MLGraphBuilder interface: builder must inherit property "buildAsync(MLNamedOperands)" with the proper type]
+    expected: FAIL
+
+  [MLGraphBuilder interface: calling buildAsync(MLNamedOperands) on builder with too few arguments must throw TypeError]
+    expected: FAIL
+
 
 [idlharness.https.any.worker.html]
   [idl_test setup]
@@ -1749,3 +1758,12 @@
 
   [MLCommandEncoder interface: operation finish(optional GPUCommandBufferDescriptor)]
     expected: FAIL
+
+  [MLGraphBuilder interface: operation buildAsync(MLNamedOperands)]
+    expected: FAIL
+
+  [MLGraphBuilder interface: builder must inherit property "buildAsync(MLNamedOperands)" with the proper type]
+    expected: FAIL
+
+  [MLGraphBuilder interface: calling buildAsync(MLNamedOperands) on builder with too few arguments must throw TypeError]
+    expected: FAIL
diff --git a/testing/web-platform/meta/webrtc-stats/supported-stats.html.ini b/testing/web-platform/meta/webrtc-stats/supported-stats.html.ini
index b6548c0ec50a..418a4099a520 100644
--- a/testing/web-platform/meta/webrtc-stats/supported-stats.html.ini
+++ b/testing/web-platform/meta/webrtc-stats/supported-stats.html.ini
@@ -592,3 +592,18 @@
 
   [transport's dtlsRole]
     expected: FAIL
+
+  [inbound-rtp's trackIdentifier]
+    expected: FAIL
+
+  [inbound-rtp's mid]
+    expected: FAIL
+
+  [inbound-rtp's jitterBufferTargetDelay]
+    expected: FAIL
+
+  [inbound-rtp's jitterBufferMinimumDelay]
+    expected: FAIL
+
+  [outbound-rtp's mid]
+    expected: FAIL