Bugfixes:
The presence of a single long message, such as a forwarded email, created an error within a conversation thread. This error then disrupted the "mark as read" functionality for all subsequent messages, causing the green "unread" indicator to persist incorrectly.
An error occurred when a user moved a column and then cycled through the sort options to an unsorted state, which caused the system to bypass the manual save step. As a result, the new column layout was saved automatically, and the "Save" and "Save as" buttons vanished unexpectedly.