I'm running Thunderbird 115.10.1 on Microsoft Windows 10. I do most of my work in a unified inbox that has three accounts -- 2 POP, 1 IMAP. I added the IMAP account more than a year ago, at least as far back as 102.15.0, and it has never worked right in the unified inbox. If I open the account inbox directly, I can delete a message (although I don't understand the way the UI works for this account): I press the "delete" button, the header in the message list gets a strikethrough line, and some time later the message vanishes from the inbox. If I open the unified inbox and delete a message from either of the POP accounts, it vanishes immediately. If I delete a message from the IMAP account, nothing happens in the UI for the unified inbox -- but if I look at another tab where I have the IMAP account inbox open, I see the strikethrough line. Eventually the message vanishes from the IMAP account inbox, and when I look back at the unified inbox, I can see that it has vanished there, too. Is this as simple as failing to render the strikethrough in the unified inbox, or is there something worse happening here?