Hello! Sincerest apologies for the delay. After rechecking, it seems like it we’re at a roadblock for this issue. There’s a possibility that these folders are locally managed SharePoint sites and sometimes, there may be instances where it doesn’t connect, causing the folder to not show up in the list.
Right now, our best bet is to get more data from users who are experiencing this as well so we can compare the log files and identify the bug.