This goes back to when there was underlining under everything (issue 114572 I think).  Since that was fixed, now any
error in xml validation etc. has no underlining at all.  This is a regression and needs to be addressed for beta 2

Steps:

1. Create a new Java application
2. Create a new empty xml file
3. Paste the following to the created file:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" 
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/
spring-beans-2.0.xsd">

       <thisisinvalid/>

</beans>

4. Validate the file => there is a validation error, but no error stripes indicating where the error is.