I was tinkering with outbound CID settings, and ran into this. I made a bunch of updates to extensions. Including clarifying the extension CID for a few users. I did it within LibreOffice and did not notice that it screwed the double quotes over.
“Jared Busch” instead of "Jared Busch"
I found it when I went to change a follow me setting and I hit submit.
Can I tell you as a developer writing code how much I HATE those types of quotes. I would say file a bug report. File it against core. The data is handled at the module level. It just needs to filter input.