diff --git a/MobileGL/MG_Backend/DirectVulkan/BackendObject_DirectVulkan.cpp b/MobileGL/MG_Backend/DirectVulkan/BackendObject_DirectVulkan.cpp
index 64c8de26..8822111b 100644
--- a/MobileGL/MG_Backend/DirectVulkan/BackendObject_DirectVulkan.cpp
+++ b/MobileGL/MG_Backend/DirectVulkan/BackendObject_DirectVulkan.cpp
@@ -330,7 +330,25 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         PopulateFormatCapabilitiesImpl(physicalDevice, getFormatProperties, capabilities, cache);
     }
 
+#if MOBILEGL_BUILD_DISAGGREGATED
+    BackendObject_DirectVulkan::~BackendObject_DirectVulkan() {
+        // P12 review fix: A SERVER SESSION THAT ENDS WITHOUT A CLEAN TEARDOWN LEAVES NO RENDERER ON
+        // THE WINDOW. The renderer - swapchain and VkSurfaceKHR on the window - is a process global
+        // that only ReleaseEGLResources / a released surface drops, and a client that went away
+        // without eglTerminate (a crash, a kill, a dropped connection) sends neither. Under a
+        // transport this object is the server's and its destruction is the session's end (ServerLoop's
+        // apply thread, after the final drain, before the display lease ends), so the renderer goes
+        // here: nothing of the ended session keeps presenting into, or holding a surface on, the
+        // server's window once its lease is over. Monolith keeps its renderer.
+        if (MG_Config::Transport != MG_Config::TransportMode::Monolith && pVulkanRenderer != nullptr) {
+            BumpRendererGeneration();
+            pVulkanRenderer.reset();
+            ClearProgramResourceCaches();
+        }
+    }
+#else
     BackendObject_DirectVulkan::~BackendObject_DirectVulkan() = default;
+#endif
 
     BackendObject_DirectVulkan::BackendObject_DirectVulkan() : m_rendererInfo{GetRendererIdentity()} {}