diff --git a/backends/imgui_impl_allegro5.cpp b/backends/imgui_impl_allegro5.cpp
index b7e77687c..ae91443ce 100644
--- a/backends/imgui_impl_allegro5.cpp
+++ b/backends/imgui_impl_allegro5.cpp
@@ -462,8 +462,9 @@ void ImGui_ImplAllegro5_Shutdown()
     if (bd->ClipboardTextData)
         al_free(bd->ClipboardTextData);
 
-    io.BackendPlatformUserData = nullptr;
     io.BackendPlatformName = io.BackendRendererName = nullptr;
+    io.BackendPlatformUserData = nullptr;
+    io.BackendFlags &= ~ImGuiBackendFlags_HasMouseCursors;
     IM_DELETE(bd);
 }
 
diff --git a/backends/imgui_impl_android.cpp b/backends/imgui_impl_android.cpp
index 029c2c527..48828ec20 100644
--- a/backends/imgui_impl_android.cpp
+++ b/backends/imgui_impl_android.cpp
@@ -269,6 +269,8 @@ bool ImGui_ImplAndroid_Init(ANativeWindow* window)
 
 void ImGui_ImplAndroid_Shutdown()
 {
+    ImGuiIO& io = ImGui::GetIO();
+    io.BackendPlatformName = nullptr;
 }
 
 void ImGui_ImplAndroid_NewFrame()
diff --git a/backends/imgui_impl_dx10.cpp b/backends/imgui_impl_dx10.cpp
index e07435929..06edb0e0d 100644
--- a/backends/imgui_impl_dx10.cpp
+++ b/backends/imgui_impl_dx10.cpp
@@ -567,6 +567,7 @@ void ImGui_ImplDX10_Shutdown()
     if (bd->pd3dDevice) { bd->pd3dDevice->Release(); }
     io.BackendRendererName = nullptr;
     io.BackendRendererUserData = nullptr;
+    io.BackendFlags &= ~ImGuiBackendFlags_RendererHasVtxOffset;
     IM_DELETE(bd);
 }
 
diff --git a/backends/imgui_impl_dx11.cpp b/backends/imgui_impl_dx11.cpp
index 43fe8144d..eaf4cf6d6 100644
--- a/backends/imgui_impl_dx11.cpp
+++ b/backends/imgui_impl_dx11.cpp
@@ -583,6 +583,7 @@ void ImGui_ImplDX11_Shutdown()
     if (bd->pd3dDeviceContext)    { bd->pd3dDeviceContext->Release(); }
     io.BackendRendererName = nullptr;
     io.BackendRendererUserData = nullptr;
+    io.BackendFlags &= ~ImGuiBackendFlags_RendererHasVtxOffset;
     IM_DELETE(bd);
 }
 
diff --git a/backends/imgui_impl_dx12.cpp b/backends/imgui_impl_dx12.cpp
index 2e390d20c..8712fce71 100644
--- a/backends/imgui_impl_dx12.cpp
+++ b/backends/imgui_impl_dx12.cpp
@@ -739,6 +739,7 @@ void ImGui_ImplDX12_Shutdown()
     delete[] bd->pFrameResources;
     io.BackendRendererName = nullptr;
     io.BackendRendererUserData = nullptr;
+    io.BackendFlags &= ~ImGuiBackendFlags_RendererHasVtxOffset;
     IM_DELETE(bd);
 }
 
diff --git a/backends/imgui_impl_dx9.cpp b/backends/imgui_impl_dx9.cpp
index 61e9d6ed0..28afa44e2 100644
--- a/backends/imgui_impl_dx9.cpp
+++ b/backends/imgui_impl_dx9.cpp
@@ -304,6 +304,7 @@ void ImGui_ImplDX9_Shutdown()
     if (bd->pd3dDevice) { bd->pd3dDevice->Release(); }
     io.BackendRendererName = nullptr;
     io.BackendRendererUserData = nullptr;
+    io.BackendFlags &= ~ImGuiBackendFlags_RendererHasVtxOffset;
     IM_DELETE(bd);
 }
 
diff --git a/backends/imgui_impl_glfw.cpp b/backends/imgui_impl_glfw.cpp
index 2241b9d53..31b22681b 100644
--- a/backends/imgui_impl_glfw.cpp
+++ b/backends/imgui_impl_glfw.cpp
@@ -643,6 +643,7 @@ void ImGui_ImplGlfw_Shutdown()
 
     io.BackendPlatformName = nullptr;
     io.BackendPlatformUserData = nullptr;
+    io.BackendFlags &= ~(ImGuiBackendFlags_HasMouseCursors | ImGuiBackendFlags_HasSetMousePos | ImGuiBackendFlags_HasGamepad);
     IM_DELETE(bd);
 }
 
diff --git a/backends/imgui_impl_glut.cpp b/backends/imgui_impl_glut.cpp
index 5a3e7cc1d..3f911a136 100644
--- a/backends/imgui_impl_glut.cpp
+++ b/backends/imgui_impl_glut.cpp
@@ -191,6 +191,8 @@ void ImGui_ImplGLUT_InstallFuncs()
 
 void ImGui_ImplGLUT_Shutdown()
 {
+    ImGuiIO& io = ImGui::GetIO();
+    io.BackendPlatformName = nullptr;
 }
 
 void ImGui_ImplGLUT_NewFrame()
diff --git a/backends/imgui_impl_metal.mm b/backends/imgui_impl_metal.mm
index e195a15b9..00f5c0c65 100644
--- a/backends/imgui_impl_metal.mm
+++ b/backends/imgui_impl_metal.mm
@@ -135,6 +135,12 @@ bool ImGui_ImplMetal_Init(id<MTLDevice> device)
 
 void ImGui_ImplMetal_Shutdown()
 {
+    ImGui_ImplMetal_Data* bd = ImGui_ImplMetal_GetBackendData();
+    IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?");
+    ImGuiIO& io = ImGui::GetIO();
+    io.BackendRendererName = nullptr;
+    io.BackendRendererUserData = nullptr;
+    io.BackendFlags &= ~ImGuiBackendFlags_RendererHasVtxOffset;
     ImGui_ImplMetal_DestroyDeviceObjects();
     ImGui_ImplMetal_DestroyBackendData();
 }
diff --git a/backends/imgui_impl_opengl3.cpp b/backends/imgui_impl_opengl3.cpp
index 7bf26e666..0a01a5f79 100644
--- a/backends/imgui_impl_opengl3.cpp
+++ b/backends/imgui_impl_opengl3.cpp
@@ -355,6 +355,7 @@ void    ImGui_ImplOpenGL3_Shutdown()
     ImGui_ImplOpenGL3_DestroyDeviceObjects();
     io.BackendRendererName = nullptr;
     io.BackendRendererUserData = nullptr;
+    io.BackendFlags &= ~ImGuiBackendFlags_RendererHasVtxOffset;
     IM_DELETE(bd);
 }
 
diff --git a/backends/imgui_impl_osx.mm b/backends/imgui_impl_osx.mm
index f92775ed8..bf2747862 100644
--- a/backends/imgui_impl_osx.mm
+++ b/backends/imgui_impl_osx.mm
@@ -476,12 +476,19 @@ bool ImGui_ImplOSX_Init(NSView* view)
 void ImGui_ImplOSX_Shutdown()
 {
     ImGui_ImplOSX_Data* bd = ImGui_ImplOSX_GetBackendData();
+    IM_ASSERT(bd != nullptr && "No platform backend to shutdown, or already shutdown?");
+    ImGuiIO& io = ImGui::GetIO();
+
     bd->Observer = nullptr;
     if (bd->Monitor != nullptr)
     {
         [NSEvent removeMonitor:bd->Monitor];
         bd->Monitor = nullptr;
     }
+
+    io.BackendPlatformName = nullptr;
+    io.BackendPlatformUserData = nullptr;
+    io.BackendFlags &= ~(ImGuiBackendFlags_HasMouseCursors | ImGuiBackendFlags_HasGamepad);
     ImGui_ImplOSX_DestroyBackendData();
 }
 
diff --git a/backends/imgui_impl_sdl2.cpp b/backends/imgui_impl_sdl2.cpp
index 8ba4be2fc..0721c2c26 100644
--- a/backends/imgui_impl_sdl2.cpp
+++ b/backends/imgui_impl_sdl2.cpp
@@ -491,6 +491,7 @@ void ImGui_ImplSDL2_Shutdown()
 
     io.BackendPlatformName = nullptr;
     io.BackendPlatformUserData = nullptr;
+    io.BackendFlags &= ~(ImGuiBackendFlags_HasMouseCursors | ImGuiBackendFlags_HasSetMousePos | ImGuiBackendFlags_HasGamepad);
     IM_DELETE(bd);
 }
 
diff --git a/backends/imgui_impl_sdl3.cpp b/backends/imgui_impl_sdl3.cpp
index c03cfb599..5b0c82d95 100644
--- a/backends/imgui_impl_sdl3.cpp
+++ b/backends/imgui_impl_sdl3.cpp
@@ -425,6 +425,7 @@ void ImGui_ImplSDL3_Shutdown()
 
     io.BackendPlatformName = nullptr;
     io.BackendPlatformUserData = nullptr;
+    io.BackendFlags &= ~(ImGuiBackendFlags_HasMouseCursors | ImGuiBackendFlags_HasSetMousePos | ImGuiBackendFlags_HasGamepad);
     IM_DELETE(bd);
 }
 
diff --git a/backends/imgui_impl_sdlrenderer.cpp b/backends/imgui_impl_sdlrenderer.cpp
index 998a53739..2d4308378 100644
--- a/backends/imgui_impl_sdlrenderer.cpp
+++ b/backends/imgui_impl_sdlrenderer.cpp
@@ -86,6 +86,7 @@ void ImGui_ImplSDLRenderer_Shutdown()
 
     io.BackendRendererName = nullptr;
     io.BackendRendererUserData = nullptr;
+    io.BackendFlags &= ~ImGuiBackendFlags_RendererHasVtxOffset;
     IM_DELETE(bd);
 }
 
diff --git a/backends/imgui_impl_vulkan.cpp b/backends/imgui_impl_vulkan.cpp
index bfc488c26..c5ee279f8 100644
--- a/backends/imgui_impl_vulkan.cpp
+++ b/backends/imgui_impl_vulkan.cpp
@@ -1000,6 +1000,7 @@ void ImGui_ImplVulkan_Shutdown()
     ImGui_ImplVulkan_DestroyDeviceObjects();
     io.BackendRendererName = nullptr;
     io.BackendRendererUserData = nullptr;
+    io.BackendFlags &= ~ImGuiBackendFlags_RendererHasVtxOffset;
     IM_DELETE(bd);
 }
 
diff --git a/backends/imgui_impl_wgpu.cpp b/backends/imgui_impl_wgpu.cpp
index 1355d7e78..8da8e4575 100644
--- a/backends/imgui_impl_wgpu.cpp
+++ b/backends/imgui_impl_wgpu.cpp
@@ -751,6 +751,7 @@ void ImGui_ImplWGPU_Shutdown()
 
     io.BackendRendererName = nullptr;
     io.BackendRendererUserData = nullptr;
+    io.BackendFlags &= ~ImGuiBackendFlags_RendererHasVtxOffset;
     IM_DELETE(bd);
 }
 
diff --git a/backends/imgui_impl_win32.cpp b/backends/imgui_impl_win32.cpp
index ecdf910e9..cfbe3a290 100644
--- a/backends/imgui_impl_win32.cpp
+++ b/backends/imgui_impl_win32.cpp
@@ -178,6 +178,7 @@ void    ImGui_ImplWin32_Shutdown()
 
     io.BackendPlatformName = nullptr;
     io.BackendPlatformUserData = nullptr;
+    io.BackendFlags &= ~(ImGuiBackendFlags_HasMouseCursors | ImGuiBackendFlags_HasSetMousePos | ImGuiBackendFlags_HasGamepad);
     IM_DELETE(bd);
 }
 
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
index 72771734c..aaec7c70a 100644
--- a/docs/CHANGELOG.txt
+++ b/docs/CHANGELOG.txt
@@ -42,6 +42,9 @@ Breaking changes:
 
 Other changes:
 
+- Backends: Clear bits sets io.BackendFlags on backend Shutdown(). (#6334, #6335] [@GereonV]
+  Potentially this would facilitate switching runtime backend mid-session.
+
 
 
 -----------------------------------------------------------------------