Copy & Pasting PDF Text - Blank

If I download an invoice or estimate as a pdf and then copy the description part of the line item and past it elsewhere it is blank. I double checked the font to make sure it’s black as well.

On a Mac using preview to open the PDF. Tried pasting in notes & body of email in apple mail. Neither worked.

@lubos can you explain the above?

have you tried opening the pdf and copying text from a different pdf viewer? if not, please try the same to check if problem persists.
also, please provide details of your Manager version and your OS details for better assistance.