My colleagues and I have been using Teams desktop in earnest for the past 6 months. Over the weekend our PCs had the usual monthly MS update. We used to be able to sort "File" columns (ex. change the "Modified" column from "Older to newer" to "Newer to older") and the change would be saved. Now the changes appear to return to the (default?) "Older to newer" setting whenever we leave the "File" tab.