Running version 52.9.1 (from Ubuntu 18.04 repository) I have looked through the past several threads which have this issue and there do appear to be duplicate messages in all of the "stuck" cases on my system
** Attachment added: "Message thread which cannot be expanded" https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/583577/+attachment/5187676/+files/Screenshot%20from%202018-09-11%2010-19-51.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/583577 Title: "View by Threads with Unread" results in no ability to read some messages To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/583577/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
