Keep BFC disabled. Fixes #717.

common/lc_viewsphere.cpp

@@ -237,6 +237,7 @@ void lcViewSphere::Draw()
 	Context->SetHighlightParams(HighlightPosition, TextColor, BackgroundColor, HighlightColor);
 	Context->DrawIndexedPrimitives(GL_TRIANGLES, mSubdivisions * mSubdivisions * 6 * 6, GL_UNSIGNED_SHORT, 0);
 
+	Context->EnableCullFace(false);
 	Context->SetDepthFunction(lcDepthFunction::LessEqual);
 
 	Context->SetViewport(0, 0, Width, Height);

common/piece.cpp

@@ -631,6 +631,7 @@ void lcPiece::DrawInterface(lcContext* Context, const lcScene& Scene) const
 			Context->DrawIndexedPrimitives(GL_TRIANGLES, 36, GL_UNSIGNED_SHORT, 0);
 		}
 
+		Context->EnableCullFace(false);
 		glDisable(GL_BLEND);
 	}
 }