Index: source/processor2d/vclprocessor2d.cxx
===================================================================
--- source/processor2d/vclprocessor2d.cxx	(revision 1502181)
+++ source/processor2d/vclprocessor2d.cxx	(working copy)
@@ -425,7 +425,8 @@
 #if defined(MACOSX)
 				const AlphaMask aMaskBmp( aContent.GetSizePixel());
 #else
-				const Bitmap aMaskBmp( aContent.GetSizePixel(), 1);
+				Bitmap aMaskBmp( aContent.GetSizePixel(), 1);
+                aMaskBmp.Erase(Color(COL_BLACK)); // #122758# Initialize to non-transparent
 #endif
 				aBitmapEx = BitmapEx(aContent, aMaskBmp);
 			}