PDF Export Bug with Corel X7 update 4

Upon installing update 4 today, I have encountered a new bug. I use symbols in a scaled drawing with complex outlines. 

What I am finding is when exporting to pdf, the outline is reverting to the line weight of what it should be scaled to full scale, rather than the outline weight of the current scale. Any symbol that has a broken reference shows the correct line weight.

When using adobe acrobat to print to pdf, the bug does not occur. Only with the internal publish to pdf function.

I know the lines are hard to see on the Corel Publish to PDF, but I can confirm that the lines are there, and they are dotted/solid where proper.