jsp with empty content prolog gives error

i f you deploy jsp pages with 1 empty row and after the content, like:
--------------------

<%
response.sendRedirect("first.jsf");
%>
----------------------------------
the error in the log is:

ERROR [io.undertow.request] (default task-1) UT005023: Exception handling request to /index.jsp: java.lang.IllegalStateException: UT010006: Cannot call getWriter(), getOutputStream() already called
at io.undertow.servlet.spec.HttpServletResponseImpl.getWriter(HttpServletResponseImpl.java:298) [undertow-servlet-1.0.0.Beta30.jar:1.0.0.Beta30]
at org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:126) [jastow-1.0.0.CR1.jar:1.0.0.CR1]
at org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:119) [jastow-1.0.0.CR1.jar:1.0.0.CR1]
at org.apache.jasper.runtime.PageContextImpl.release(PageContextImpl.java:188) [jastow-1.0.0.CR1.jar:1.0.0.CR1]
at org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFactoryImpl.java:115) [jastow-1.0.0.CR1.jar:1.0.0.CR1]
at org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.java:74) [jastow-1.0.0.CR1.jar:1.0.0.CR1]
at org.apache.jsp.index_jsp._jspService(index_jsp.java:66)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:69) [jastow-1.0.0.CR1.jar:1.0.0.CR1]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) [jboss-servlet-api_3.1_spec-1.0.0.Final.jar:1.0.0.Final]
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:366) [jastow-1.0.0.CR1.jar:1.0.0.CR1]
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:326) [jastow-1.0.0.CR1.jar:1.0.0.CR1]
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:259) [jastow-1.0.0.CR1.jar:1.0.0.CR1]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) [jboss-servlet-api_3.1_spec-1.0.0.Final.jar:1.0.0.Final]
at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:87) [undertow-servlet-1.0.0.Beta30.jar:1.0.0.Beta30]
at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:61) [undertow-servlet-1.0.0.Beta30.jar:1.0.0.Beta30]
at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) [undertow-servlet-1.0.0.Beta30.jar:1.0.0.Beta30]
at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:70)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.0.Beta30.jar:1.0.0.Beta30]
at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:113) [undertow-servlet-1.0.0.Beta30.jar:1.0.0.Beta30]
at io.undertow.security.handlers.AuthenticationCallHandler.handleRequest(AuthenticationCallHandler.java:52) [undertow-core-1.0.0.Beta30.jar:1.0.0.Beta30]
at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:45) [undertow-core-1.0.0.Beta30.jar:1.0.0.Beta30]
at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:61) [undertow-servlet-1.0.0.Beta30.jar:1.0.0.Beta30]
at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:67) [undertow-servlet-1.0.0.Beta30.jar:1.0.0.Beta30]
at io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:70) [undertow-core-1.0.0.Beta30.jar:1.0.0.Beta30]
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.0.Beta30.jar:1.0.0.Beta30]
at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.0.Beta30.jar:1.0.0.Beta30]
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.0.Beta30.jar:1.0.0.Beta30]
at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:240) [undertow-servlet-1.0.0.Beta30.jar:1.0.0.Beta30]
at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:227) [undertow-servlet-1.0.0.Beta30.jar:1.0.0.Beta30]
at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:73) [undertow-servlet-1.0.0.Beta30.jar:1.0.0.Beta30]
at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:146) [undertow-servlet-1.0.0.Beta30.jar:1.0.0.Beta30]
at io.undertow.server.Connectors.executeRootHandler(Connectors.java:164) [undertow-core-1.0.0.Beta30.jar:1.0.0.Beta30]
at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:654) [undertow-core-1.0.0.Beta30.jar:1.0.0.Beta30]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_45]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_45]
at java.lang.Thread.run(Thread.java:744) [rt.jar:1.7.0_45]