Started experiencing this is 8.0.2 and moved to 8.5 beta 2. When clicking on a message in the inbox a different message opens up. It seems to be the same message that opens no matter which message on my inbox that I select. If you close the mail app and then re-open it the problem usually goes away, not always. I don’t know what actaully causes it as it appears to be very random. I have run fixup and compact -c on the mail file but the problem still occurs. The server is 8.0.2