Error when using display name expression

Bugs
1

Enonic version: 7.6.1
OS: Linux
CS: 3.2.3

We have upgraded from 7.2.4 to 7.6.1. It seems like display-name-expression is not working anymore.
Here is the error we get:

main.js:2 Uncaught TypeError: Cannot read property 'getValue' of null
    at main.js:2
    at Function.ObjectHelper.objectPropertyIterator (main.js:2)
    at PropertySet.getValuesAsString (main.js:2)
    at DisplayNameResolver.getFormValues (main.js:2)
    at DisplayNameResolver.safeEval (main.js:2)
    at DisplayNameResolver.execute (main.js:2)
    at HTMLDivElement.<anonymous> (main.js:2)
2

Can you provide your content type schema?

3

Here it is:

<?xml version="1.0" encoding="UTF-8"?>
<content-type>
  <display-name>News</display-name>
  <display-name-expression>${NEWS_TITLE}</display-name-expression>
  <super-type>base:structured</super-type>
  <form>
    <input name="RELATED_LOCALE" type="ContentSelector">
      <label>News page in other languages</label>
      <occurrences minimum="0" maximum="1"/>
      <config>
        <relationshipType>system:reference</relationshipType>
        <allowPath>*</allowPath>
        <allowContentType>news</allowContentType>
      </config>
    </input>
    <input type="TextArea" name="NEWS_TITLE">
      <label>Title</label>
      <occurrences minimum="1" maximum="1"/>
    </input>
    <input type="ComboBox" name="NEWS_TYPE">
      <label>News Type</label>
      <occurrences minimum="1" maximum="1"/>
      <config>
        <option value="FEATURED">Featured</option>
        <option value="REGULAR">Regular</option>
        <option value="MINOR">Minor</option>
      </config>
    </input>
    <input type="ImageSelector" name="NEWS_IMAGE">
      <label>Main image</label>
      <occurrences minimum="1" maximum="1"/>
    </input>
    <input type="HTMLArea" name="NEWS_IMAGE_CAPTION">
      <label>Image caption</label>
      <occurrences minimum="0" maximum="1"/>
    </input>
    <input name="NEWS_BYLINE" type="ContentSelector">
      <label>News byline content selector</label>
      <occurrences minimum="0" maximum="1"/>
      <config>
        <relationshipType>system:reference</relationshipType>
        <allowPath>*</allowPath>
        <allowContentType>employee</allowContentType>
      </config>
    </input>
    <input name="NEWS_BYLINE_STRING" type="TextLine">
      <label>News byline string</label>
    </input>
    <input type="TextArea" name="NEWS_INGRESS_SHORT">
      <label>Forsideingress</label>
      <occurrences minimum="0" maximum="1"/>
    </input>
    <input type="TextArea" name="NEWS_INGRESS">
      <label>Ingress</label>
      <occurrences minimum="1" maximum="1"/>
    </input>
    <input name="NEWS_CONTACT" type="ContentSelector">
      <label>Contact</label>
      <occurrences minimum="0" maximum="0"/>
      <config>
        <relationshipType>system:reference</relationshipType>
        <allowPath>*</allowPath>
        <allowContentType>employee</allowContentType>
      </config>
    </input>
    <input name="RELATED_PUBLICATIONS" type="ContentSelector">
      <label>Related publications</label>
      <occurrences minimum="0" maximum="0"/>
      <config>
        <relationshipType>system:reference</relationshipType>
        <allowPath>*</allowPath>
        <allowContentType>publication</allowContentType>
      </config>
    </input>
    <input name="RELATED_PROJECTS" type="ContentSelector">
      <label>Related projects</label>
      <occurrences minimum="0" maximum="0"/>
      <config>
        <relationshipType>system:reference</relationshipType>
        <allowPath>*</allowPath>
        <allowContentType>project</allowContentType>
      </config>
    </input>
    <input name="RELATED_NEWS" type="ContentSelector">
      <label>Related news</label>
      <occurrences minimum="0" maximum="0"/>
      <config>
        <relationshipType>system:reference</relationshipType>
        <allowPath>*</allowPath>
        <allowContentType>news</allowContentType>
      </config>
    </input>
    <mixin name="tags"/>
  </form>
</content-type>
4

Yep, it’s this one. We’ll prioritise this for the 3.2.4 release as well.