Ok this is weird.

I have a design I made in X7. It's a sign with sliders for various doctor names. I'll go to export the file as png for quick proofing by the client. 96dpi @ 800pixels wide by proportional height. One of the names is dropped off. Export again and use the preview to zoom in, sure enough the name doesn't appear in the preview either. Drop the width to 400px and two characters now show in that one name. Now while still looking at the preview window I bump the width back to 800px and then the whole name appears and so I go ahead and export and all is good. I have no idea why that is. Using individual artistic text. Just thought I'd throw it out there.