Sometimes a glitch is just a glitch.
I share that philosophy wholeheartedly, Bob. However, sometimes a glitch is something that CAN be avoided, if I always remember to check the "No Glitch" box, or if I sing "Proud Mary" before opening the PDF. My entire career is creating PDFs from InDesign. If this glitch persists, life could get ugly ... uh, uglier.
Anybody else?? (Please??)
What app are you using to view the PDF?
Do you have the PDF that is incorrect along with a correct version, and able to share?
The error was there in both the latest versions of Acrobat and Reader.
The errors in the sample provided earlier ... don't have that anymore; wish I did. However, when I corrected THAT file, I missed ONE similar error on the same page. Below is a link to the PDF with that ONE remaining font bug. It's in the fourth entry on the "timeline" ... where it says "1986-1992:" ... the 2 is the wrong font. (I know this example looks like it could be "pilot error" ... it isn't.)
Thanks for caring, Jeffrey!
It could be a corrupt font on your system.
Or the file itself could be corrupt - and you fix minor corruption by exporting your InDesign file to an IDML file.
Open the IDML file (opens as untitled) and save as a new file name.
I had kind of those problems at the time (a long time ago), when the computer ran out of resources. I would test the PDF on a second computer, just to see, if the problem follows the computer.
When text changes to different characters or font families from how it appears in native document, to how it appears in a pdf, this could be due to character mapping during the pdf creation. And your PDF does have a character mapping anomaly.
The Bookman Oldstyle shows twice in Font Properties with both ANSI and CID encoding. The multiple encodings mean there could be multiple versions of Bookman on system, or from a different source, like a different Bookman used in a graphic.
The CID encoding could be there is a glyph used that is not in the standard character map, and requires a larger encoding CID.
What you can try: export PDF with no font subsetting. Do this in PDF export window > Advanced > Subset font when percent... Make this 0%.
You can also try printing a postscript file and distilling.
And, when examining your PDF, the numeral "4" throughout the PDF is incorrect as well.
Thanks very much! I'm saving all notes, suggestions and explanations, which I will delve into, should this ever happen again. I've created thousands of PDFs from InDesign, and this is the first time I've ever noticed it. And ... once I reset those two lines of text and Saved As ... problem's gone. Couldn't replicate it intentionally if I wanted to.
I'll consider this resolved and answered, and thanks very much for your help!.
HOWEVER: You've said that the numeral "4" is incorrect throughout my PDF. If you're looking at the PDF that I uploaded, and if the 4's look wrong to you, you're seeing something I'm not seeing ... they look okay to me! Or did I misunderstand you?