Version: 1.13.0 (using Devel) Installed from: Compiled sources When I select a message (from an IMAP-account) and that message has both plain-text and HTML versions, the contents of the message is not shown. When I click on the "HTML message" bar on left, the HTML-version is shown. When I click on the "HTML message" bar again, the plain-text version is shown. It happens only for some individual messages, but it's reproducable on these messages always.
Just now I experienced the same problem on a plain-text-only message - when I select it, the message is not shown, but when I click on the bar "No HTML Message", the message is shown.
Thank you for taking the time to file a bug report. KMail2 was released in 2011, and the entire code base went through significant changes. We are currently in the process of porting to Qt5 and KF5. It is unlikely that these bugs are still valid in KMail2. We welcome you to try out KMail 2 with the KDE 4.14 release and give your feedback.