diff --git a/docs/rh-log.txt b/docs/rh-log.txt
index 4126d2326..2ac52f24c 100644
--- a/docs/rh-log.txt
+++ b/docs/rh-log.txt
@@ -1,3 +1,8 @@
+June 21, 2006 (Changes by Graf Zahl)
+- Fixed: PIT_StompThing never checked for COMPATF_NO_PASSMOBJ.
+- Fixed: COMPATF_TRACE returned true for all two-sided lines, not just for
+  those with the same sector on both sides.
+
 June 20, 2006
 - Added grubber's thingdef_exp.cpp. I might not use it later, but I can still
   use it now.
diff --git a/src/p_map.cpp b/src/p_map.cpp
index 0a09a3d1b..adb79ddca 100644
--- a/src/p_map.cpp
+++ b/src/p_map.cpp
@@ -280,7 +280,7 @@ BOOL PIT_StompThing (AActor *thing)
 	// [RH] Z-Check
 	// But not if not MF2_PASSMOBJ or MF3_DONTOVERLAP are set!
 	// Otherwise those things would get stuck inside each other.
-	if (tmthing->flags2&MF2_PASSMOBJ)
+	if ((tmthing->flags2 & MF2_PASSMOBJ || thing->flags4 & MF4_ACTLIKEBRIDGE) && !(i_compatflags & COMPATF_NO_PASSMOBJ))
 	{
 		if (!(thing->flags3 & tmthing->flags3 & MF3_DONTOVERLAP))
 		{
diff --git a/src/p_trace.cpp b/src/p_trace.cpp
index 7fd71da70..f84a9dd64 100644
--- a/src/p_trace.cpp
+++ b/src/p_trace.cpp
@@ -170,8 +170,8 @@ static BOOL PTR_TraceIterator (intercept_t *in)
 			entersector = (lineside == 0) ? in->d.line->backsector : in->d.line->frontsector;
 			
 			// For backwards compatibility: Ignore lines with the same sector on both sides.
-			// This is the way Doom.exe did it and some WADs (e.g. Alien Vendetta MAP15 needs it.
-			if (i_compatflags & COMPATF_TRACE)
+			// This is the way Doom.exe did it and some WADs (e.g. Alien Vendetta MAP15 need it.
+			if (i_compatflags & COMPATF_TRACE && in->d.line->backsector == in->d.line->frontsector)
 			{
 				return true;
 			}
diff --git a/src/p_xlat.cpp b/src/p_xlat.cpp
index b61b51927..12a81805b 100644
--- a/src/p_xlat.cpp
+++ b/src/p_xlat.cpp
@@ -405,7 +405,7 @@ void P_TranslateTeleportThings ()
 			}
 			else if (lines[i].special == Teleport_ZombieChanger)
 			{
-				if (lines[i].args[2] == 0)
+				if (lines[i].args[1] == 0)
 				{
 					lines[i].args[0] = 1;
 				}