diff --git a/src/events.cpp b/src/events.cpp
index 2649bf162..cca0a9398 100755
--- a/src/events.cpp
+++ b/src/events.cpp
@@ -762,6 +762,7 @@ void DStaticEventHandler::WorldThingDamaged(AActor* actor, AActor* inflictor, AA
 			return;
 		FWorldEvent e = E_SetupWorldEvent();
 		e.Thing = actor;
+		e.Inflictor = inflictor;
 		e.Damage = damage;
 		e.DamageSource = source;
 		e.DamageType = mod;
diff --git a/src/scripting/thingdef_data.cpp b/src/scripting/thingdef_data.cpp
index f7b84f21b..274c865bf 100644
--- a/src/scripting/thingdef_data.cpp
+++ b/src/scripting/thingdef_data.cpp
@@ -1267,3 +1267,16 @@ DEFINE_ACTION_FUNCTION(FStringStruct, LastIndexOf)
 	ACTION_RETURN_INT(self->LastIndexOf(substr));
 }
 
+DEFINE_ACTION_FUNCTION(FStringStruct, ToUpper)
+{
+	PARAM_SELF_STRUCT_PROLOGUE(FString);
+	self->ToUpper();
+	return 0;
+}
+
+DEFINE_ACTION_FUNCTION(FStringStruct, ToLower)
+{
+	PARAM_SELF_STRUCT_PROLOGUE(FString);
+	self->ToLower();
+	return 0;
+}
diff --git a/wadsrc/static/compatibility.txt b/wadsrc/static/compatibility.txt
index 485991a07..ee676b051 100644
--- a/wadsrc/static/compatibility.txt
+++ b/wadsrc/static/compatibility.txt
@@ -689,6 +689,30 @@ EBDAC00E9D25D884B2C8F4B1F0390539 // doom2.wad map21
 	setsectorspecial 93 0
 	setwalltexture 582 back top ZIMMER3
 }
+20251EDA21B2F2ECF6FF5B8BBC00B26C // Doom II, MAP29
+{
+	// Missing textures on teleporters
+	setwalltexture 405 back bot SUPPORT3
+	setwalltexture 406 back bot SUPPORT3
+	setwalltexture 407 back bot SUPPORT3
+	setwalltexture 408 back bot SUPPORT3
+	setwalltexture 516 back bot SUPPORT3
+	setwalltexture 517 back bot SUPPORT3
+	setwalltexture 518 back bot SUPPORT3
+	setwalltexture 519 back bot SUPPORT3
+	setwalltexture 524 back bot SUPPORT3
+	setwalltexture 525 back bot SUPPORT3
+	setwalltexture 526 back bot SUPPORT3
+	setwalltexture 527 back bot SUPPORT3
+	setwalltexture 1146 back bot SUPPORT3
+	setwalltexture 1147 back bot SUPPORT3
+	setwalltexture 1148 back bot SUPPORT3
+	setwalltexture 1149 back bot SUPPORT3
+	setwalltexture 1138 back bot SUPPORT3
+	setwalltexture 1139 back bot SUPPORT3
+	setwalltexture 1140 back bot SUPPORT3
+	setwalltexture 1141 back bot SUPPORT3
+}
 ABC4EB5A1535ECCD0061AD14F3547908 // Plutonia Experiment, map26
 {
 	setsectorspecial 156 0
diff --git a/wadsrc/static/shaders/glsl/main.fp b/wadsrc/static/shaders/glsl/main.fp
index 2fb762bad..cab4f5d9b 100644
--- a/wadsrc/static/shaders/glsl/main.fp
+++ b/wadsrc/static/shaders/glsl/main.fp
@@ -220,6 +220,7 @@ float diffuseContribution(vec3 lightDirection, vec3 normal)
 float pointLightAttenuation(vec4 lightpos, float lightcolorA)
 {
 	float attenuation = max(lightpos.w - distance(pixelpos.xyz, lightpos.xyz),0.0) / lightpos.w;
+	if (attenuation == 0.0) return 0.0;
 #ifdef SUPPORTS_SHADOWMAPS
 	float shadowIndex = abs(lightcolorA) - 1.0;
 	attenuation *= shadowmapAttenuation(lightpos, shadowIndex);
diff --git a/wadsrc/static/zscript/base.txt b/wadsrc/static/zscript/base.txt
index b2fd9c6c8..b7607d555 100644
--- a/wadsrc/static/zscript/base.txt
+++ b/wadsrc/static/zscript/base.txt
@@ -658,6 +658,8 @@ struct StringStruct native
 	native String Filter();
 	native int IndexOf(String substr, int startIndex = 0) const;
 	native int LastIndexOf(String substr) const;
+	native void ToUpper();
+	native void ToLower();
 }
 
 class SectorEffect : Thinker native