Wrong display of non-ASCII characters (umlauts) in file and folder names shared from windows host to linux guest

[FrankSt]

Host: VB 4.2.4, Windows 7 Guest: Linux (ROSA 2012 Marathon) with Additions 4.2.4

When I share a folder from Windows host to Linux guest, files and folders containing German umlauts (and probably other non-ASCII characters) are displayed incorrectly. E. g. "Antikörper" becomes "Antik�rper". This happens in the KDE filemanager (Dolphin) as well as on the konsole. The affected files and folders are inaccessible from the guest, even after manually replacing � with the correct character. This seems to be a regression introduced with guest additions 4.2.0 (I confirmed this for 4.2.0, 4.2.2, and 4.2.4), since it does not happen when I use guest additions 4.1.22 or previous with my 4.2.4 host.

[FrankSt]

VBox.log

[aeichner]

Please reopen if still relevant with a recent VirtualBox release.