I ran the problem I'm having (and many others) with Outlook and POP email accounts having their headers stripped out, causing corruption in the e-mail display through ChatGPT. It looks like Bitdefender it putting a blank line in, which could be causing the issue. See below:
I turned off Encrypted Web scan under Online Threat Protection, and so far that seems to do the trick. I hope the developers can come out with a fix (and BROADLY let us know it's available!) soon. It doesn't look like the fix should be too difficult.