diff --git a/cli/tests/unit/webgpu_test.ts b/cli/tests/unit/webgpu_test.ts
index decceb0f91a3a1..2d98167cfdec77 100644
--- a/cli/tests/unit/webgpu_test.ts
+++ b/cli/tests/unit/webgpu_test.ts
@@ -217,6 +217,16 @@ Deno.test({
   Deno.close(Number(resources[resources.length - 1]));
 });
 
+Deno.test({
+  ignore: isWsl || isLinuxOrMacCI,
+}, async function webgpuAdapterHasFeatures() {
+  const adapter = await navigator.gpu.requestAdapter();
+  assert(adapter);
+  assert(adapter.features);
+  const resources = Object.keys(Deno.resources());
+  Deno.close(Number(resources[resources.length - 1]));
+});
+
 async function checkIsWsl() {
   return Deno.build.os === "linux" && await hasMicrosoftProcVersion();
 
diff --git a/ext/webgpu/01_webgpu.js b/ext/webgpu/01_webgpu.js
index 3e8e3161ec77dc..a310eac2fc7a59 100644
--- a/ext/webgpu/01_webgpu.js
+++ b/ext/webgpu/01_webgpu.js
@@ -618,11 +618,12 @@ function createGPUSupportedFeatures(features) {
   /** @type {GPUSupportedFeatures} */
   const supportedFeatures = webidl.createBranded(GPUSupportedFeatures);
   supportedFeatures[webidl.setlikeInner] = new Set(features);
-  return webidl.setlike(
+  webidl.setlike(
     supportedFeatures,
     GPUSupportedFeaturesPrototype,
     true,
   );
+  return supportedFeatures;
 }
 
 class GPUSupportedFeatures {
@@ -4903,14 +4904,14 @@ class GPURenderBundleEncoder {
    * @param {number} offset
    * @param {number} size
    */
-  setVertexBuffer(slot, buffer, offset = 0, size = 0) {
+  setVertexBuffer(slot, buffer, offset = 0, size) {
     webidl.assertBranded(this, GPURenderBundleEncoderPrototype);
     const prefix =
       "Failed to execute 'setVertexBuffer' on 'GPURenderBundleEncoder'";
     webidl.requiredArguments(arguments.length, 2, { prefix });
     slot = webidl.converters.GPUSize32(slot, {
       prefix,
-      context: "Argument 2",
+      context: "Argument 1",
     });
     buffer = webidl.converters.GPUBuffer(buffer, {
       prefix,
@@ -4920,10 +4921,12 @@ class GPURenderBundleEncoder {
       prefix,
       context: "Argument 3",
     });
-    size = webidl.converters.GPUSize64(size, {
-      prefix,
-      context: "Argument 4",
-    });
+    if (size !== undefined) {
+      size = webidl.converters.GPUSize64(size, {
+        prefix,
+        context: "Argument 4",
+      });
+    }
     const device = assertDevice(this, { prefix, context: "this" });
     const renderBundleEncoderRid = assertResource(this, {
       prefix,
diff --git a/ext/webgpu/bundle.rs b/ext/webgpu/bundle.rs
index 3d0f11d89634fb..65897d80b207d0 100644
--- a/ext/webgpu/bundle.rs
+++ b/ext/webgpu/bundle.rs
@@ -289,7 +289,7 @@ pub fn op_webgpu_render_bundle_encoder_set_vertex_buffer(
   slot: u32,
   buffer: ResourceId,
   offset: u64,
-  size: u64,
+  size: Option<u64>,
 ) -> Result<WebGpuResult, AnyError> {
   let buffer_resource = state
     .resource_table
@@ -298,10 +298,14 @@ pub fn op_webgpu_render_bundle_encoder_set_vertex_buffer(
     state
       .resource_table
       .get::<WebGpuRenderBundleEncoder>(render_bundle_encoder_rid)?;
-  let size = Some(
-    std::num::NonZeroU64::new(size)
-      .ok_or_else(|| type_error("size must be larger than 0"))?,
-  );
+  let size = if let Some(size) = size {
+    Some(
+      std::num::NonZeroU64::new(size)
+        .ok_or_else(|| type_error("size must be larger than 0"))?,
+    )
+  } else {
+    None
+  };
 
   wgpu_core::command::bundle_ffi::wgpu_render_bundle_set_vertex_buffer(
     &mut render_bundle_encoder_resource.0.borrow_mut(),