Tag is gone once I click other emails or any button
Hi.
I have two accounts on Thunderbird (the latest version up to 2024/12/8). One is Outlook and the other is via IMAP. I find tag function works well in any email of the Outlook account. But for my IMAP account, once I tag any email, it soon disappears after any further operation (e.g., clicking any button). What happened here? Is there any way to fix it?