[Wine] New WoW Launcher.exe changes directory permissions

[emn8w8]

I'm using Wine (1.1.13) for over a year now on openSuSE Linux (11.1); I'm using a few Windows programs but mostly used is WoW. Never ran Wine as root, never had a noteworthy problem with any program; WoW was installed, upgraded and patched without a glitch (now at 3.2.2.10505) and ran just fine. Until 2 days ago when Blizzard delivered a small update which included a new launcher. Every time this launcher is started it shows it's screen but it cannot start WoW.exe anymore. And that's no wonder: The permissions of the WoW directory are changed from the original drwxr-xr-x into d---r-x---..which makes it inaccessible quite effectively.....The accusing finger would point to Blizzard, but the real question is: 
How is a Windows program running on Wine capable of messing with these permissions..?
A workaround is to manually restore the permissions to their original before pressing the "Play" button, or to use a copy of this entire directory from an NTFS partition on an USB drive (in this case the permissions are left alone).
But that's quick and very dirty.....anyone a suggestion..?

Best regards, Erik