Temporary fix for #4647 (would not work for 3D)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36968 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
5.0.18.0

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36969 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e