With fonts embedded and exporting to pdf, any equation that uses %kappa will result in the Greek kappa being dropped from the equation when uploading the pdf to Kindle Direct Publishing (KDP). All other Greek letters in equations are recognized by KDP just fine, but not kappa. However, if the kappa is entered in a text line as a Basic Greek character then KDP recognizes it. It is only with the equation editor that kappa is not recognized by KDP. The temporary solution to this problem is to never use Greek kappa in any equations that are to be published through KDP.
Can you attach an example document that will show the problem? Is it possible to see the problem without KDP? Can we see it with any PDF viewer? Please copy and paste here the contents of your Help - About (LibreOffice - About on macOS) by clicking the copy button. This allows us to know more about your system. Set to NEEDINFO. Change back to UNCONFIRMED after you have provided the information.
Dear Dan Brown, This bug has been in NEEDINFO status with no change for at least 6 months. Please provide the requested information as soon as possible and mark the bug as UNCONFIRMED. Due to regular bug tracker maintenance, if the bug is still in NEEDINFO status with no change in 30 days the QA team will close the bug as INSUFFICIENTDATA due to lack of needed information. For more information about our NEEDINFO policy please read the wiki located here: https://wiki.documentfoundation.org/QA/Bugzilla/Fields/Status/NEEDINFO If you have already provided the requested information, please mark the bug as UNCONFIRMED so that the QA team knows that the bug is ready to be confirmed. Thank you for helping us make LibreOffice even better for everyone! Warm Regards, QA Team MassPing-NeedInfo-Ping
Sorry for the delay -- I just now saw that you were waiting on me for more info. I initially reported this to KDP and they said that it was a problem with embedded fonts. I then reported it to you. However, it looks like KDP has now fixed the problem. So this was not a bug with LibreOffice after all, but with KDP's software.
[Automated Action] NeedInfo-To-Unconfirmed