diff --git a/Engine/source/gui/core/guiCanvas.cpp b/Engine/source/gui/core/guiCanvas.cpp
index f50cc0152..7cbea6d64 100644
--- a/Engine/source/gui/core/guiCanvas.cpp
+++ b/Engine/source/gui/core/guiCanvas.cpp
@@ -1760,7 +1760,11 @@ void GuiCanvas::renderFrame(bool preRenderOnly, bool bufferSwap /* = true */)
       const char *pref = Con::getVariable( "$pref::Video::mode" );
       mode.parseFromString( pref );
       mode.antialiasLevel = 0;
+      Point2I winPos = mPlatformWindow->getPosition(); // Save position so we can put window back.
       mPlatformWindow->setVideoMode(mode);
+      // setVideoMode (above) will center the window on the display device. If the window had been positioned
+      // by the user or from script, put it back where it was before the light manager change.
+      mPlatformWindow->setPosition(winPos);
 
       Con::printf( "AntiAliasing has been disabled; it is not compatible with AdvancedLighting." );
    }
@@ -1772,7 +1776,11 @@ void GuiCanvas::renderFrame(bool preRenderOnly, bool bufferSwap /* = true */)
       if ( prefAA != mode.antialiasLevel )
       {
          mode.parseFromString( pref );
+         Point2I winPos = mPlatformWindow->getPosition(); // Save position so we can put window back.
          mPlatformWindow->setVideoMode(mode);
+         // setVideoMode (above) will center the window on the display device. If the window had been positioned
+         // by the user or from script, put it back where it was before the light manager change.
+         mPlatformWindow->setPosition(winPos);
 
          Con::printf( "AntiAliasing has been enabled while running BasicLighting." );
       }
diff --git a/Engine/source/windowManager/sdl/sdlWindow.cpp b/Engine/source/windowManager/sdl/sdlWindow.cpp
index 2faccb555..2c725a2d1 100644
--- a/Engine/source/windowManager/sdl/sdlWindow.cpp
+++ b/Engine/source/windowManager/sdl/sdlWindow.cpp
@@ -207,7 +207,6 @@ void PlatformWindowSDL::_setVideoMode( const GFXVideoMode &mode )
          SDL_MaximizeWindow(mWindowHandle);
    }
 
-   getScreenResChangeSignal().trigger(this, true);
    mSuppressReset = false;
 }
 
diff --git a/Templates/BaseGame/game/core/gui/scripts/canvas.tscript b/Templates/BaseGame/game/core/gui/scripts/canvas.tscript
index 9f040f1e9..5a22d909a 100644
--- a/Templates/BaseGame/game/core/gui/scripts/canvas.tscript
+++ b/Templates/BaseGame/game/core/gui/scripts/canvas.tscript
@@ -120,6 +120,13 @@ function configureCanvas()
 
    // Actually set the new video mode
    Canvas.setVideoMode(%resX, %resY, %fs, %bpp, %rate, %aa);
+
+   // For borderless on non-windows OS, move the window into position.
+   if (($pref::Video::deviceMode == $Video::ModeBorderless) && ($platform !$= "windows"))
+   {
+      %borderlessPos = getWords(Canvas.getMonitorUsableRect($pref::Video::deviceId), 0, 1);
+      Canvas.setWindowPosition(%borderlessPos);
+   }
    Canvas.setFocus();
 
    // Lock and unlock the mouse to force the position to sync with the platform window
@@ -184,6 +191,12 @@ function GuiCanvas::checkCanvasRes(%this, %mode, %deviceId, %deviceMode, %startu
 
       return true;
    }
+   else if (%deviceMode == $Video::ModeFullscreen)
+   {  // Fullscreen must match the aspect ratio of the monitor
+      %deviceRes = getWords(%this.getMonitorRect(%deviceId), 2);
+      if (mRoundColour(%resX / %resY, 2) != mRoundColour(%deviceRes.x / %deviceRes.y, 2))
+         return false;
+   }
 
    if (!%startup)
       return true;
@@ -238,5 +251,13 @@ function GuiCanvas::getBestCanvasRes(%this, %deviceId, %deviceMode)
          %bestRes = %testRes;
    }
 
+   // Borderless on non-windows OS should be the usable screen area.
+   if ((%deviceMode == $Video::ModeBorderless) && ($platform !$= "windows"))
+   {
+      %deviceRect = getWords(%this.getMonitorUsableRect(%deviceId), 2);
+      %bestRes = setWord(%bestRes, $WORD::RES_X, %deviceRect.x);
+      %bestRes = setWord(%bestRes, $WORD::RES_Y, %deviceRect.y);
+   }
+
    return %bestRes;
 }
diff --git a/Templates/BaseGame/game/core/rendering/scripts/graphicsOptions.tscript b/Templates/BaseGame/game/core/rendering/scripts/graphicsOptions.tscript
index 353b9b795..21b5ae9c2 100644
--- a/Templates/BaseGame/game/core/rendering/scripts/graphicsOptions.tscript
+++ b/Templates/BaseGame/game/core/rendering/scripts/graphicsOptions.tscript
@@ -845,6 +845,13 @@ function getScreenResolutionList(%deviceID, %deviceMode)
 {
    %returnsList = "";
 
+   // For borderless on non-windows OS only add the usable area.
+   if ((%deviceMode == $Video::ModeBorderless) && ($platform !$= "windows"))
+   {
+      %borderlessRes = getWords(Canvas.getMonitorUsableRect(%newDeviceID), 2);
+      return _makePrettyResString(%borderlessRes);
+   }
+
    %resCount = Canvas.getModeCount();
    for (%i = 0; %i < %resCount; %i++)
    {
diff --git a/Templates/BaseGame/game/data/ui/guis/optionsMenu.tscript b/Templates/BaseGame/game/data/ui/guis/optionsMenu.tscript
index eba6e173b..416bbe36b 100644
--- a/Templates/BaseGame/game/data/ui/guis/optionsMenu.tscript
+++ b/Templates/BaseGame/game/data/ui/guis/optionsMenu.tscript
@@ -634,9 +634,14 @@ function onDisplayModeChange(%val)
    }
    %resolutionList = getScreenResolutionList(%newDeviceID, %newDeviceMode);
 
-   // If we're switching to borderless, default to monitor res
    if (%newDeviceMode == $Video::ModeBorderless)
-      %newRes = getWords(Canvas.getMonitorRect(%newDeviceID), 2);
+   {  // If we're switching to borderless, default to monitor res on Windows OS,
+      // monitor usable area for other platforms.
+      if ($platform $= "windows")
+         %newRes = getWords(Canvas.getMonitorRect(%newDeviceID), 2);
+      else
+         %newRes = getWords(Canvas.getMonitorUsableRect(%newDeviceID), 2);
+   }
    else
    {  // Otherwise, if our old resolution is still in the list, attempt to reset it.
       %oldRes = getWord(OptionsMenuSettingsList.getCurrentOption(3), 0) SPC getWord(OptionsMenuSettingsList.getCurrentOption(3), 2);