When setting up a document for a client (to make sure that pages fall correctly), sometimes I need to insert blank pdf pages. On occasions, doing this causes a page that was displaying correctly beforehand to somehow show white boxes (small boxes, one to replace each letter) where text used to be. There is nothing I can do to correct this other than to close out of the document without saving.
These are from files that were already pdfs when the client sent them to us; NOT conversions from Word Documents or anything else. Also, this doesn't always affect the entire file; only small sections.
This is a rare problem, but an aggravating one. Any ideas?