Specific Thunderbird user folder location for specific user emails

Thunderbird Version 102.14.0 When in the Folders, Unread Folders only view and selecting a specific user folder in the Folders pane which contains a specific unread user email, then selecting a specific user email within the folder in the Emails pane, if the All Folders view is selected, then deselected, the specific folder location (which was highlighted) of the specific email being viewed in the Read pane is lost if there are no unread emails remaining. There are multiple ways in which losing the specific folder location of a specific email is lost. Another more general condition. With no unread emails, view All Folders only. Select a specific Folder. Select a specific email within the Folder. Switch to Unread Folders and deselect All Folders. Select All Folders again. Although the specific email is still selected and in the Read pane, there is no indication as to it's specific folder location in the Folders pane. How can the specific folder location of a specific user email be determined after it's status has changed to Read? For a specific email, the "Location" column in the Emails pane would be a logical choice, but it is blank and contains no information. This question is also not related to the Thunderbird app folder locations such as Profile. This question is a functional question about Thunderbird email attributes.