It was suggested a while back to use the [wpAllSymbolFontsAsGlyph] option to improve something or another (can't recall). Up until recently it had seemed ok but now they seem to show up in the PDF too low on the line in relation to the other text. Maybe some wPDF or Windows update started this? Maybe it's always been like this and I just now noticed it.
Anyway, I've tried several Symbol chars such as 0xB7 (medium bullet) and 0xA8 (diamond) which looks positioned correctly in Print Preview but not in the PDF when using the wpAllSymbolFontsAsGlyph option. Some of the Wingdings chars like a small bullet 0x178 and large bullet 0x6C look OK in both Print Preview and PDF. Are Wingdings considered Symbols in this case? Maybe another option is required?
wPDF400W.dll 4.82.1.0