I’ve discovered an issue involving ‘setting the current message’ that may affect TB users generally. I have been using the Add-on “Quick Folder Move” by Philipp Kewisch, ver 1.10.0 in TB ver. 91.2.1 64-bit in Windows 10. Sometimes, when I change the current folder to a different one, I select a message by a single click, but the contents are not displayed in the preview pane. When I then right-click and choose move to, the Quick Folder Move search box opens. After selecting a destination folder in the normal way, the selected message does not move. Instead, the previous “current message” moves. This is inconvenient, since I then have to find that message and move it back. The error in ‘setting the current message’ occurs frequently, perhaps 1 in 4 times when I change the folder. It sometimes occurs even when I don’t change the folder. My current workarounds are: -to double-click the message line when the contents are not displayed in Preview. -close and re-start TB when the error is too frequent.