MText Background Masks With Lines Merge
Unfortunately Autodesk has refused to fix what we have always considered a bug in their program when it comes to MText Background Masks and Lines Merge. When you enable lines merge support to any output device even their own DWF driver the MText Background Masks become transparent. We have always thought this was a bug and most users agree with use but Autodesk's comment is that this is "By Design" and they have never fixed the problem or given users an option on the output.