In Thunderbird (v. 102.9.0), I have all folders set to the same column structure. I have used the add-on XNote++ for a long time and it used to work fine. Now, however, when I open Thunderbird or even activate the window after coming out of "sleep" mode, either (1) the XNote++ column is moved from the extreme right of the window (where I want it) to the extreme left; or (2) the column disappears altogether. This happens only for the first folder that is active. If I switch to another folder, the columns are correct. So each time I have to go through the process of copying another folder's column structure to the corrupted folder.

I don't know whether this is a result of a new release of Thunderbird or some change in XNote++, but it didn't used to act this way. Any suggestions?