Highlighting PDF distorts text
I frequently "save as PDF" documents from the Federal Trade Commission. The format changed over the past several months so that after I open the saved document and use the highlighter tool, the text becomes distorted and garbled, even text that is not directly highlighed:
Before:

After:

Note that when I "print as Adobe PDF", the document cannot be effectively highlighted, resulting in the large elliptical shapes at the bottom of the document, which other posts have reported.
This seems to happen primarily with documents from the Federal Trade Commission. The link to the excerpts above is https://www.ftc.gov/business-guidance/resources/can-spam-act-compliance-guide-business.
I have not seen anyone address this problem. Thanks for any help.
