The FileBrowser 'setRootDirectory' method does not correctly work if more than one drive is present and the chosen root directory is on a drive other than the first logical drive.
The problem appears to be in the following class:
The code is a bit hard to follow, but I think the problem is that the drive list button item is set in the "rootDirectoryChanged" method of the skin:
and this leads to setRootDirectory being called again for the root of the drive. Typically you want this to happen, but not when a root directory is in the process of being set.
The bug manifests itself as the correct path being displayed in the file browser, but the files list is that of the root of the drive.
I have a proposed fix that seems to work.