diff --git a/src/d_main.cpp b/src/d_main.cpp
index 861318c66..668dcf1ce 100644
--- a/src/d_main.cpp
+++ b/src/d_main.cpp
@@ -2730,6 +2730,7 @@ void D_DoomMain (void)
 		ST_Clear();
 		D_ErrorCleanup ();
 		DThinker::DestroyThinkersInList(STAT_STATIC);
+		E_Shutdown(false);
 		P_FreeLevelData();
 		P_FreeExtraLevelData();
 
@@ -2775,6 +2776,8 @@ void D_DoomMain (void)
 		restart++;
 		PClass::bShutdown = false;
 		PClass::bVMOperational = false;
+
+		gamestate = GS_STARTUP;
 	}
 	while (1);
 }
diff --git a/src/gl/scene/gl_portal.cpp b/src/gl/scene/gl_portal.cpp
index 25b2ff236..3f8ede410 100644
--- a/src/gl/scene/gl_portal.cpp
+++ b/src/gl/scene/gl_portal.cpp
@@ -606,10 +606,7 @@ void GLSkyboxPortal::DrawContents(FDrawInfo *di)
 	di->SetViewArea();
 	ClearClipper(di);
 
-	int mapsection = R_PointInSubsector(r_viewpoint.Pos)->mapsection;
-
-	di->CurrentMapSections.Zero();
-	di->CurrentMapSections.Set(mapsection);
+	di->UpdateCurrentMapSection();
 
 	drawer->DrawScene(di, DM_SKYPORTAL);
 	portal->mFlags &= ~PORTSF_INSKYBOX;
@@ -770,6 +767,8 @@ void GLPlaneMirrorPortal::DrawContents(FDrawInfo *di)
 	drawer->SetupView(r_viewpoint.Pos.X, r_viewpoint.Pos.Y, r_viewpoint.Pos.Z, r_viewpoint.Angles.Yaw, !!(MirrorFlag & 1), !!(PlaneMirrorFlag & 1));
 	ClearClipper(di);
 
+	di->UpdateCurrentMapSection();
+
 	gl_RenderState.SetClipHeight(planez, PlaneMirrorMode < 0 ? -1.f : 1.f);
 	drawer->DrawScene(di, DM_PORTAL);
 	gl_RenderState.SetClipHeight(0.f, 0.f);
@@ -875,6 +874,8 @@ void GLMirrorPortal::DrawContents(FDrawInfo *di)
 		return;
 	}
 
+	di->UpdateCurrentMapSection();
+
 	di->mClipPortal = this;
 	DAngle StartAngle = r_viewpoint.Angles.Yaw;
 	DVector3 StartPos = r_viewpoint.Pos;
diff --git a/src/gl/scene/gl_scene.cpp b/src/gl/scene/gl_scene.cpp
index f2e0301fb..91d4e4235 100644
--- a/src/gl/scene/gl_scene.cpp
+++ b/src/gl/scene/gl_scene.cpp
@@ -739,6 +739,8 @@ void GLSceneDrawer::WriteSavePic (player_t *player, FileWriter *file, int width,
 	GLRenderer->CopyToBackbuffer(&bounds, false);
 	glFlush();
 
+	screen->SetOutputViewport(nullptr);
+
 	uint8_t * scr = (uint8_t *)M_Malloc(width * height * 3);
 	glReadPixels(0,0,width, height,GL_RGB,GL_UNSIGNED_BYTE,scr);
 	M_CreatePNG (file, scr + ((height-1) * width * 3), NULL, SS_RGB, width, height, -width * 3, Gamma);
diff --git a/src/gl/scene/gl_scenedrawer.h b/src/gl/scene/gl_scenedrawer.h
index d075e1418..3396c269c 100644
--- a/src/gl/scene/gl_scenedrawer.h
+++ b/src/gl/scene/gl_scenedrawer.h
@@ -32,7 +32,6 @@ public:
 
 	angle_t FrustumAngle();
 	void SetViewMatrix(float vx, float vy, float vz, bool mirror, bool planemirror);
-	void SetViewArea();
 	void SetupView(float vx, float vy, float vz, DAngle va, bool mirror, bool planemirror);
 	void SetViewAngle(DAngle viewangle);
 	void SetProjection(VSMatrix matrix);
diff --git a/src/hwrenderer/scene/hw_drawinfo.h b/src/hwrenderer/scene/hw_drawinfo.h
index e9db60a09..8bec0df27 100644
--- a/src/hwrenderer/scene/hw_drawinfo.h
+++ b/src/hwrenderer/scene/hw_drawinfo.h
@@ -175,6 +175,8 @@ public:
 	void PreparePlayerSprites(sector_t * viewsector, area_t in_area);
 	void PrepareTargeterSprites();
 
+	void UpdateCurrentMapSection();
+
 	virtual void DrawWall(GLWall *wall, int pass) = 0;
 	virtual void DrawFlat(GLFlat *flat, int pass, bool trans) = 0;
 	virtual void DrawSprite(GLSprite *sprite, int pass) = 0;
diff --git a/src/hwrenderer/scene/hw_renderhacks.cpp b/src/hwrenderer/scene/hw_renderhacks.cpp
index 57fef57e0..74c5b3f0e 100644
--- a/src/hwrenderer/scene/hw_renderhacks.cpp
+++ b/src/hwrenderer/scene/hw_renderhacks.cpp
@@ -86,6 +86,12 @@ void HWDrawInfo::ClearBuffers()
 	mClipPortal = nullptr;
 }
 
+void HWDrawInfo::UpdateCurrentMapSection()
+{
+	const int mapsection = R_PointInSubsector(r_viewpoint.Pos)->mapsection;
+	CurrentMapSections.Set(mapsection);
+}
+
 //==========================================================================
 //
 // Adds a subsector plane to a sector's render list
diff --git a/src/serializer.cpp b/src/serializer.cpp
index aa1c9a49e..58d5658d4 100644
--- a/src/serializer.cpp
+++ b/src/serializer.cpp
@@ -989,6 +989,11 @@ void FSerializer::ReadObjects(bool hubtravel)
 		{
 			DThinker::bSerialOverride = true;
 			r->mDObjects.Resize(ArraySize());
+			for (auto &p : r->mDObjects)
+			{
+				p = nullptr;
+			}
+
 			// First iteration: create all the objects but do nothing with them yet.
 			for (unsigned i = 0; i < r->mDObjects.Size(); i++)
 			{
@@ -1060,7 +1065,7 @@ void FSerializer::ReadObjects(bool hubtravel)
 			// nuke all objects we created here.
 			for (auto obj : r->mDObjects)
 			{
-				if (!(obj->ObjectFlags & OF_EuthanizeMe)) obj->Destroy();
+				if (obj != nullptr && !(obj->ObjectFlags & OF_EuthanizeMe)) obj->Destroy();
 			}
 			r->mDObjects.Clear();