Thank you for your post.
I am able to replicate the issue. It doesn't matter if the formatting is set to double spacing or specific height. WebDirect displays as single spacing.
I have forwarded your post along with my findings to our Development and Testing departments for review. When I receive more feedback, I will let you know.
An entry in the Known Bugs List has been linked to this Issue Report. Any Comments/Questions/Suggested Corrections should be posted here or in a new thread. Please do not post such comments to the Known Bugs List thread.