diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
index 9ec3687c6..4645c48a9 100644
--- a/docs/CHANGELOG.txt
+++ b/docs/CHANGELOG.txt
@@ -45,6 +45,9 @@ Other Changes:
 
 - Style: border sizes are now scaled (and rounded) by ScaleAllSizes().
 - Clipper: clear DisplayStart/DisplayEnd fields when Step() returns false.
+- Examples:
+  - WGPU: fixed undefined behaviors in example code for requesting adapter
+    and device. (#9246, #9256) [@r-lyeh]
 
 
 -----------------------------------------------------------------------
diff --git a/examples/example_glfw_wgpu/main.cpp b/examples/example_glfw_wgpu/main.cpp
index 1a6373c8a..f77314bd6 100644
--- a/examples/example_glfw_wgpu/main.cpp
+++ b/examples/example_glfw_wgpu/main.cpp
@@ -385,23 +385,29 @@ static WGPUAdapter RequestAdapter(WGPUInstance& instance)
 {
     WGPURequestAdapterOptions adapter_options = {};
 
-    WGPUAdapter local_adapter;
+    WGPUAdapter local_adapter = nullptr;
     WGPURequestAdapterCallbackInfo adapterCallbackInfo = {};
+    adapterCallbackInfo.mode = WGPUCallbackMode_WaitAnyOnly;
     adapterCallbackInfo.callback = handle_request_adapter;
     adapterCallbackInfo.userdata1 = &local_adapter;
 
-    wgpuInstanceRequestAdapter(instance, &adapter_options, adapterCallbackInfo);
+    WGPUFuture future = wgpuInstanceRequestAdapter(instance, &adapter_options, adapterCallbackInfo);
+    WGPUFutureWaitInfo waitInfo = { future, false };
+    wgpuInstanceWaitAny(instance, 1, &waitInfo, ~0ull);
     IM_ASSERT(local_adapter && "Error on Adapter request");
     return local_adapter;
 }
 
-static WGPUDevice RequestDevice(WGPUAdapter& adapter)
+static WGPUDevice RequestDevice(WGPUInstance& instance, WGPUAdapter& adapter)
 {
-    WGPUDevice local_device;
+    WGPUDevice local_device = nullptr;
     WGPURequestDeviceCallbackInfo deviceCallbackInfo = {};
+    deviceCallbackInfo.mode = WGPUCallbackMode_WaitAnyOnly;
     deviceCallbackInfo.callback = handle_request_device;
     deviceCallbackInfo.userdata1 = &local_device;
-    wgpuAdapterRequestDevice(adapter, nullptr, deviceCallbackInfo);
+    WGPUFuture future = wgpuAdapterRequestDevice(adapter, nullptr, deviceCallbackInfo);
+    WGPUFutureWaitInfo waitInfo = { future, false };
+    wgpuInstanceWaitAny(instance, 1, &waitInfo, ~0ull);
     IM_ASSERT(local_device && "Error on Device request");
     return local_device;
 }
@@ -449,7 +455,11 @@ bool InitWGPU(GLFWwindow* window)
 
     // WGPU backend: Adapter and Device acquisition, Surface creation
 #elif defined(IMGUI_IMPL_WEBGPU_BACKEND_WGPU)
-    wgpu_instance = wgpuCreateInstance(nullptr);
+    WGPUInstanceDescriptor instanceDesc = {};
+    WGPUInstanceFeatureName timedWaitAny = WGPUInstanceFeatureName_TimedWaitAny;
+    instanceDesc.requiredFeatureCount = 1;
+    instanceDesc.requiredFeatures = &timedWaitAny;
+    wgpu_instance = wgpuCreateInstance(&instanceDesc);
 
 #ifdef __EMSCRIPTEN__
     getAdapterAndDeviceViaJS();
@@ -476,7 +486,7 @@ bool InitWGPU(GLFWwindow* window)
     WGPUAdapter adapter = RequestAdapter(wgpu_instance);
     ImGui_ImplWGPU_DebugPrintAdapterInfo(adapter);
 
-    wgpu_device = RequestDevice(adapter);
+    wgpu_device = RequestDevice(wgpu_instance, adapter);
 
     // Create the surface.
     wgpu_surface = CreateWGPUSurface(wgpu_instance, window);
diff --git a/examples/example_sdl2_wgpu/main.cpp b/examples/example_sdl2_wgpu/main.cpp
index 40a206cf1..66bd77015 100644
--- a/examples/example_sdl2_wgpu/main.cpp
+++ b/examples/example_sdl2_wgpu/main.cpp
@@ -369,23 +369,29 @@ static WGPUAdapter RequestAdapter(WGPUInstance& instance)
 {
     WGPURequestAdapterOptions adapter_options = {};
 
-    WGPUAdapter local_adapter;
+    WGPUAdapter local_adapter = nullptr;
     WGPURequestAdapterCallbackInfo adapterCallbackInfo = {};
+    adapterCallbackInfo.mode = WGPUCallbackMode_WaitAnyOnly;
     adapterCallbackInfo.callback = handle_request_adapter;
     adapterCallbackInfo.userdata1 = &local_adapter;
 
-    wgpuInstanceRequestAdapter(instance, &adapter_options, adapterCallbackInfo);
+    WGPUFuture future = wgpuInstanceRequestAdapter(instance, &adapter_options, adapterCallbackInfo);
+    WGPUFutureWaitInfo waitInfo = { future, false };
+    wgpuInstanceWaitAny(instance, 1, &waitInfo, ~0ull);
     IM_ASSERT(local_adapter && "Error on Adapter request");
     return local_adapter;
 }
 
-static WGPUDevice RequestDevice(WGPUAdapter& adapter)
+static WGPUDevice RequestDevice(WGPUInstance& instance, WGPUAdapter& adapter)
 {
-    WGPUDevice local_device;
+    WGPUDevice local_device = nullptr;
     WGPURequestDeviceCallbackInfo deviceCallbackInfo = {};
+    deviceCallbackInfo.mode = WGPUCallbackMode_WaitAnyOnly;
     deviceCallbackInfo.callback = handle_request_device;
     deviceCallbackInfo.userdata1 = &local_device;
-    wgpuAdapterRequestDevice(adapter, nullptr, deviceCallbackInfo);
+    WGPUFuture future = wgpuAdapterRequestDevice(adapter, nullptr, deviceCallbackInfo);
+    WGPUFutureWaitInfo waitInfo = { future, false };
+    wgpuInstanceWaitAny(instance, 1, &waitInfo, ~0ull);
     IM_ASSERT(local_device && "Error on Device request");
     return local_device;
 }
@@ -434,7 +440,11 @@ static bool InitWGPU(SDL_Window* window)
 
     // WGPU backend: Adapter and Device acquisition, Surface creation
 #elif defined(IMGUI_IMPL_WEBGPU_BACKEND_WGPU)
-    wgpu_instance = wgpuCreateInstance(nullptr);
+    WGPUInstanceDescriptor instanceDesc = {};
+    WGPUInstanceFeatureName timedWaitAny = WGPUInstanceFeatureName_TimedWaitAny;
+    instanceDesc.requiredFeatureCount = 1;
+    instanceDesc.requiredFeatures = &timedWaitAny;
+    wgpu_instance = wgpuCreateInstance(&instanceDesc);
 
 #ifdef __EMSCRIPTEN__
     getAdapterAndDeviceViaJS();
@@ -461,7 +471,7 @@ static bool InitWGPU(SDL_Window* window)
     WGPUAdapter adapter = RequestAdapter(wgpu_instance);
     ImGui_ImplWGPU_DebugPrintAdapterInfo(adapter);
     
-    wgpu_device = RequestDevice(adapter);
+    wgpu_device = RequestDevice(wgpu_instance, adapter);
 
     // Create the surface.
     wgpu_surface = CreateWGPUSurface(wgpu_instance, window);
diff --git a/examples/example_sdl3_wgpu/main.cpp b/examples/example_sdl3_wgpu/main.cpp
index 795ffbacf..aa67d3098 100644
--- a/examples/example_sdl3_wgpu/main.cpp
+++ b/examples/example_sdl3_wgpu/main.cpp
@@ -380,23 +380,29 @@ static WGPUAdapter RequestAdapter(WGPUInstance& instance)
 {
     WGPURequestAdapterOptions adapter_options = {};
 
-    WGPUAdapter local_adapter;
+    WGPUAdapter local_adapter = nullptr;
     WGPURequestAdapterCallbackInfo adapterCallbackInfo = {};
+    adapterCallbackInfo.mode = WGPUCallbackMode_WaitAnyOnly;
     adapterCallbackInfo.callback = handle_request_adapter;
     adapterCallbackInfo.userdata1 = &local_adapter;
 
-    wgpuInstanceRequestAdapter(instance, &adapter_options, adapterCallbackInfo);
+    WGPUFuture future = wgpuInstanceRequestAdapter(instance, &adapter_options, adapterCallbackInfo);
+    WGPUFutureWaitInfo waitInfo = { future, false };
+    wgpuInstanceWaitAny(instance, 1, &waitInfo, ~0ull);
     IM_ASSERT(local_adapter && "Error on Adapter request");
     return local_adapter;
 }
 
-static WGPUDevice RequestDevice(WGPUAdapter& adapter)
+static WGPUDevice RequestDevice(WGPUInstance& instance, WGPUAdapter& adapter)
 {
-    WGPUDevice local_device;
+    WGPUDevice local_device = nullptr;
     WGPURequestDeviceCallbackInfo deviceCallbackInfo = {};
+    deviceCallbackInfo.mode = WGPUCallbackMode_WaitAnyOnly;
     deviceCallbackInfo.callback = handle_request_device;
     deviceCallbackInfo.userdata1 = &local_device;
-    wgpuAdapterRequestDevice(adapter, nullptr, deviceCallbackInfo);
+    WGPUFuture future = wgpuAdapterRequestDevice(adapter, nullptr, deviceCallbackInfo);
+    WGPUFutureWaitInfo waitInfo = { future, false };
+    wgpuInstanceWaitAny(instance, 1, &waitInfo, ~0ull);
     IM_ASSERT(local_device && "Error on Device request");
     return local_device;
 }
@@ -445,7 +451,11 @@ static bool InitWGPU(SDL_Window* window)
 
     // WGPU backend: Adapter and Device acquisition, Surface creation
 #elif defined(IMGUI_IMPL_WEBGPU_BACKEND_WGPU)
-    wgpu_instance = wgpuCreateInstance(nullptr);
+    WGPUInstanceDescriptor instanceDesc = {};
+    WGPUInstanceFeatureName timedWaitAny = WGPUInstanceFeatureName_TimedWaitAny;
+    instanceDesc.requiredFeatureCount = 1;
+    instanceDesc.requiredFeatures = &timedWaitAny;
+    wgpu_instance = wgpuCreateInstance(&instanceDesc);
 
 #ifdef __EMSCRIPTEN__
     getAdapterAndDeviceViaJS();
@@ -472,7 +482,7 @@ static bool InitWGPU(SDL_Window* window)
     WGPUAdapter adapter = RequestAdapter(wgpu_instance);
     ImGui_ImplWGPU_DebugPrintAdapterInfo(adapter);
 
-    wgpu_device = RequestDevice(adapter);
+    wgpu_device = RequestDevice(wgpu_instance, adapter);
 
     // Create the surface.
     wgpu_surface = CreateWGPUSurface(wgpu_instance, window);