http://bugs.winehq.org/show_bug.cgi?id=31952
Bug #: 31952 Summary: Graphical bug causing horizontal lines on world Product: Wine Version: 1.5.15 Platform: x86 OS/Version: Linux Status: UNCONFIRMED Severity: normal Priority: P2 Component: -unknown AssignedTo: wine-bugs@winehq.org ReportedBy: jonathan-vola@hotmail.com Classification: Unclassified
Presumably due to a texture being projected horizontally, several areas in game have horizontal "Slices" in them.
This was to my knowledge added by an update to the game not to wine, so there is (probably) no regression.
Some areas where this bug is blindingly obvious are north Diessa Plateau and west Rata Sum.