diff --git a/src/posix/cocoa/i_video.mm b/src/posix/cocoa/i_video.mm
index 1a535c088..2d10a9ccb 100644
--- a/src/posix/cocoa/i_video.mm
+++ b/src/posix/cocoa/i_video.mm
@@ -70,6 +70,27 @@
 
 @end
 
+@interface NSWindow(EnterFullscreenOnZoom)
+- (void)enterFullscreenOnZoom;
+@end
+
+@implementation NSWindow(EnterFullscreenOnZoom)
+
+- (void)enterFullscreen:(id)sender
+{
+	ToggleFullscreen = true;
+}
+
+- (void)enterFullscreenOnZoom
+{
+	NSButton* zoomButton = [self standardWindowButton:NSWindowZoomButton];
+	[zoomButton setEnabled:YES];
+	[zoomButton setAction:@selector(enterFullscreen:)];
+	[zoomButton setTarget:self];
+}
+
+@end
+
 
 EXTERN_CVAR(Bool, ticker   )
 EXTERN_CVAR(Bool, vid_vsync)
@@ -676,6 +697,7 @@ void CocoaVideo::SetWindowedMode(const int width, const int height)
 
 	[m_window setContentSize:windowSize];
 	[m_window center];
+	[m_window enterFullscreenOnZoom];
 	[m_window exitAppOnClose];
 }
 
diff --git a/src/r_draw.cpp b/src/r_draw.cpp
index 08519c088..f82a843d8 100644
--- a/src/r_draw.cpp
+++ b/src/r_draw.cpp
@@ -1797,8 +1797,8 @@ void R_DrawFogBoundary (int x1, int x2, short *uclip, short *dclip)
 	// we need to use a new colormap.
 
 	fixed_t lightstep = rw_lightstep;
-	fixed_t light = rw_light+lightstep*(x2-x1);
-	int x = x2;
+	fixed_t light = rw_light+lightstep*(x2-x1-1);
+	int x = x2-1;
 	int t2 = uclip[x];
 	int b2 = dclip[x];
 	int rcolormap = GETPALOOKUP (light, wallshade);
diff --git a/src/thingdef/thingdef_codeptr.cpp b/src/thingdef/thingdef_codeptr.cpp
index f49b92523..8608915f4 100644
--- a/src/thingdef/thingdef_codeptr.cpp
+++ b/src/thingdef/thingdef_codeptr.cpp
@@ -6200,6 +6200,7 @@ enum CBF
 	CBF_SETMASTER		= 1 << 2,	//^ but with master.
 	CBF_SETTRACER		= 1 << 3,	//^ but with tracer.
 	CBF_SETONPTR		= 1 << 4,	//Sets the pointer change on the actor doing the checking instead of self.
+	CBF_DROPOFF			= 1 << 5,	//Check for dropoffs.
 };
 
 DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_CheckBlock)
@@ -6219,7 +6220,8 @@ DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_CheckBlock)
 	}
 
 	//Nothing to block it so skip the rest.
-	if (P_TestMobjLocation(mobj)) return;
+	bool checker = (flags & CBF_DROPOFF) ? P_CheckMove(mobj, mobj->X(), mobj->Y()) : P_TestMobjLocation(mobj);
+	if (checker) return;
 
 	if (mobj->BlockingMobj)
 	{
diff --git a/src/w_wad.cpp b/src/w_wad.cpp
index 42e5c17b9..d4127ae7b 100644
--- a/src/w_wad.cpp
+++ b/src/w_wad.cpp
@@ -979,9 +979,11 @@ void FWadCollection::FixMacHexen()
 	const long iwadSize = reader->GetLength();
 
 	static const long DEMO_SIZE = 13596228;
+	static const long BETA_SIZE = 13749984;
 	static const long FULL_SIZE = 21078584;
 
 	if (   DEMO_SIZE != iwadSize
+		&& BETA_SIZE != iwadSize
 		&& FULL_SIZE != iwadSize)
 	{
 		return;
@@ -1000,13 +1002,22 @@ void FWadCollection::FixMacHexen()
 		0x4b, 0x0a, 0x6a, 0x3b, 0xed, 0x3a, 0x6f, 0x31
 	};
 
+	static const BYTE HEXEN_BETA_MD5[16] =
+	{
+		0x2a, 0xf1, 0xb2, 0x7c, 0xd1, 0x1f, 0xb1, 0x59,
+		0xe6, 0x08, 0x47, 0x2a, 0x1b, 0x53, 0xe4, 0x0e
+	};
+
 	static const BYTE HEXEN_FULL_MD5[16] =
 	{
 		0xb6, 0x81, 0x40, 0xa7, 0x96, 0xf6, 0xfd, 0x7f,
 		0x3a, 0x5d, 0x32, 0x26, 0xa3, 0x2b, 0x93, 0xbe
 	};
 
-	if (   0 != memcmp(HEXEN_DEMO_MD5, checksum, sizeof checksum)
+	const bool isBeta = 0 == memcmp(HEXEN_BETA_MD5, checksum, sizeof checksum);
+
+	if (   !isBeta
+		&& 0 != memcmp(HEXEN_DEMO_MD5, checksum, sizeof checksum)
 		&& 0 != memcmp(HEXEN_FULL_MD5, checksum, sizeof checksum))
 	{
 		return;
@@ -1014,7 +1025,10 @@ void FWadCollection::FixMacHexen()
 
 	static const int EXTRA_LUMPS = 299;
 
-	const int lastLump = GetLastLump(IWAD_FILENUM);
+	// Hexen Beta is very similar to Demo but it has MAP41: Maze at the end of the WAD
+	// So keep this map if it's present but discard all extra lumps
+
+	const int lastLump = GetLastLump(IWAD_FILENUM) - (isBeta ? 12 : 0);
 	assert(GetFirstLump(IWAD_FILENUM) + 299 < lastLump);
 
 	for (int i = lastLump - EXTRA_LUMPS + 1; i <= lastLump; ++i)
diff --git a/wadsrc/static/actors/constants.txt b/wadsrc/static/actors/constants.txt
index f02240eda..ad90e71d8 100644
--- a/wadsrc/static/actors/constants.txt
+++ b/wadsrc/static/actors/constants.txt
@@ -516,6 +516,7 @@ enum
 	CBF_SETMASTER		= 1 << 2,	//^ but with master.
 	CBF_SETTRACER		= 1 << 3,	//^ but with tracer.
 	CBF_SETONPTR		= 1 << 4,	//Sets the pointer change on the actor doing the checking instead of self.
+	CBF_DROPOFF			= 1 << 5,	//Check for dropoffs.
 };
 
 enum
diff --git a/wadsrc/static/menudef.txt b/wadsrc/static/menudef.txt
index 0417d7a89..8bd205636 100644
--- a/wadsrc/static/menudef.txt
+++ b/wadsrc/static/menudef.txt
@@ -896,6 +896,10 @@ OptionMenu "MiscOptions"
 		Option "Merge left+right Alt/Ctrl/Shift", 		"k_mergekeys", "OnOff"
 		Option "Alt-Enter toggles fullscreen",			"k_allowfullscreentoggle", "OnOff"
 	}
+	IfOption(Mac)
+	{
+		Option "Command-F toggles fullscreen",			"k_allowfullscreentoggle", "OnOff"
+	}
 	Option "Show IWAD selection dialog",			"queryiwad", "OnOff"
 	StaticText " "
 	Option "Enable cheats from all games",			"allcheats", "OnOff"