Last modified: 2014-04-22 08:47:22 UTC
We've run into this issue when switching over from 1.19 to 1.22. Whenever $wgStyleDirectory is set to a real path, it gets ignored. When it points to a directory that doesn't exist, it appears to be used (in the sense that nothing loads). So if I set $wgStyleDirecotry to the absolute or relative path where the skins are located, MW still loads from $IP/skins.