Badly auto generated WCF proxy

I generated a WCF proxy from a WSDL file given by one of our clients using the svcutils with dotnet core 2.1. When call one of the services, I get the following error.

System.PlatformNotSupportedException: Compiling JScript/CSharp scripts is not supported

After a bit of research and looking into the generated proxy, I found that some array properties are two dimensional array instead of normal array.

        /// <remarks/>
        [System.Xml.Serialization.XmlArrayAttribute(Order=5)]
        [System.Xml.Serialization.XmlArrayItemAttribute("columns", typeof(string), IsNullable=false)]
        public string[][] labelNames
        {
            get
            {
                return this.labelNamesField;
            }
            set
            {
                this.labelNamesField = value;
            }
        }

Manually changing it to single dimension array fixes the exception. However, I get the next exception

System.InvalidOperationException: System.Xml.Linq.XElement cannot be used as: ‘xml text’

I found that the cause of this exception is due to the strange XElement[] Any properties in the generated proxy.

        private System.Xml.Linq.XElement[] anyField;

        /// <remarks/>
        [System.Xml.Serialization.XmlTextAttribute()]
        [System.Xml.Serialization.XmlAnyElementAttribute(Order=0)]
        public System.Xml.Linq.XElement[] Any
        {
            get
            {
                return this.anyField;
            }
            set
            {
                this.anyField = value;
            }
        }

Removing all these fixes that exception and everything works.

I generated the WCF for the same WSDL file using full .Net Framework svcutils tool and it did not have these issues. It seems like it might be a bug in dotnet core svcutils tool.