Messages marked as read on 2nd opening

[AngelOfDarkness]

I think it will be the same issue like this one:

Read mails are marked as unread after downloading complete message

Hello, since a few weeks (seems it started with v6.301) I have this bug: Open unread mail, click on “download complete message” and then close message (go back), then it is still marked as unread. Open downloaded message again and close it, then it is finally marked as read. I found out, that when I open (not downloaded) message and close it, then it is marked as read, but when I open it and click on “download complete message” and close it, the message is marked as unread again. Actually be…