Currently, clicking the refresh icon in the lower right of a file browser in the left pane of LMMS will cause all of its folders to be collapsed.

Ideal behavior, in my mind, is to preserve the collapsed/expanded state of all folders that existed before the refresh and have only the newly created folders default to being collapsed. Similarly, if a file/folder was selected before the refresh, it should also be selected after the refresh, if it still exists, though that's a minor difference.