diff --git a/doomsday/apps/client/src/render/modelloader.cpp b/doomsday/apps/client/src/render/modelloader.cpp
index 497da39cb1..df84941de0 100644
--- a/doomsday/apps/client/src/render/modelloader.cpp
+++ b/doomsday/apps/client/src/render/modelloader.cpp
@@ -109,7 +109,8 @@ DE_PIMPL(ModelLoader)
 #endif
             // Everything should have been unloaded, because all models
             // have been destroyed at this point.
-            DE_ASSERT(empty());
+            // (Does not apply during abnormal shutdown.)
+            //DE_ASSERT(empty());
         }
     };
     Programs programs;
diff --git a/doomsday/libs/gloom/include/gloom/render/render.h b/doomsday/libs/gloom/include/gloom/render/render.h
index d9efed7d49..b68b0cd19a 100644
--- a/doomsday/libs/gloom/include/gloom/render/render.h
+++ b/doomsday/libs/gloom/include/gloom/render/render.h
@@ -33,6 +33,8 @@ class Render
     Render();
     virtual ~Render();
 
+    bool isInitialized() const;
+
     const Context &context() const;
     Context &context();
 
diff --git a/doomsday/libs/gloom/src/render/lightrender.cpp b/doomsday/libs/gloom/src/render/lightrender.cpp
index 6e2ab957f4..096ceb10d2 100644
--- a/doomsday/libs/gloom/src/render/lightrender.cpp
+++ b/doomsday/libs/gloom/src/render/lightrender.cpp
@@ -424,8 +424,10 @@ void LightRender::render()
     }
 }
 
-void LightRender::advanceTime(TimeSpan elapsed)
+void LightRender::advanceTime(TimeSpan /*elapsed*/)
 {
+    DE_ASSERT(isInitialized());
+
     // Pick the shadow casters.
     d->selectShadowCasters();
 
diff --git a/doomsday/libs/gloom/src/render/maprender.cpp b/doomsday/libs/gloom/src/render/maprender.cpp
index e3eca6babd..2197192403 100644
--- a/doomsday/libs/gloom/src/render/maprender.cpp
+++ b/doomsday/libs/gloom/src/render/maprender.cpp
@@ -243,6 +243,8 @@ void MapRender::setPlaneY(ID planeId, double destY, double srcY, double startTim
 
 void MapRender::advanceTime(TimeSpan elapsed)
 {
+    DE_ASSERT(isInitialized());
+
     d->lights.advanceTime(elapsed);
 
     // Testing: Scroll offsets.
diff --git a/doomsday/libs/gloom/src/render/render.cpp b/doomsday/libs/gloom/src/render/render.cpp
index 1cc83f91d1..836d4e9e9a 100644
--- a/doomsday/libs/gloom/src/render/render.cpp
+++ b/doomsday/libs/gloom/src/render/render.cpp
@@ -34,6 +34,11 @@ Render::~Render()
     DE_ASSERT(d->context == nullptr);
 }
 
+bool Render::isInitialized() const
+{
+    return d->context != nullptr;
+}
+
 const Context &Render::context() const
 {
     DE_ASSERT(d->context);
@@ -54,7 +59,6 @@ void Render::glInit(Context &context)
 
 void Render::glDeinit()
 {
-    DE_ASSERT(d->context != nullptr);
     d->context = nullptr;
 }
 
diff --git a/doomsday/libs/gloom/src/world.cpp b/doomsday/libs/gloom/src/world.cpp
index fd601a7f14..1fa5609481 100644
--- a/doomsday/libs/gloom/src/world.cpp
+++ b/doomsday/libs/gloom/src/world.cpp
@@ -137,6 +137,7 @@ DE_PIMPL(World), public Asset
 
     ~Impl() override
     {
+        glDeinit();
         for (auto &a : textureAtlas) delete a;
     }
 
@@ -296,10 +297,13 @@ void World::glDeinit()
 
 void World::update(TimeSpan elapsed)
 {
-    d->update(elapsed);
-    d->environ.advanceTime(elapsed);
-    d->mapRender.advanceTime(elapsed);
-    d->tonemap.advanceTime(elapsed);
+    if (d->isReady())
+    {
+        d->update(elapsed);
+        d->environ.advanceTime(elapsed);
+        d->mapRender.advanceTime(elapsed);
+        d->tonemap.advanceTime(elapsed);
+    }
 }
 
 void World::render(const ICamera &camera)