Using Adobe Acrobat Pro DC as my default printer.
When trying to copy and paste text from pdf to another app, the text appears as gibberish (symbols, etc.)
Some pdf prints also do not allow for copying/highlighting of lines of text - tried "Enhance Scan" to ensure OCR and flow but still cannot select single words or lines of text in some documents.
As mentioned, you are getting gibberish text when copying and pasting text from pdf, it seems the issue seems to be the font related.
If the fonts of PDF don't have Unicode tables and do not use standard encoding for mapping the glyph indices to characters then you get garbage characters during copy/paste.
Also, there is a possibility the fonts used to create the PDF file are not available on your system.
you may try using the PDF Fixup Profile "Embed Fonts" in the Preflight tool to embed the font and check if that helps. However, the font does need to be installed on your system.
You may also refer to the following forum threads discussing the similar issue: